Thursday, August 31, 2017

Wearable Foxhunt Transmitter for Conventions

Amateur radio operator [KE4FOX] wanted to build his own 2M fox hunt transmitter for use at conventions. It would be contained in a 1020 Pelican micro case and attached to a person who would walk around transmitting a signal, leaving the hams to track down the fox. The project uses a DRA818 VHF/UHF transceiver plugged into a low-pass filter combined with a hardware DTMF decoder, all controlled by an ATmega328P and powered by a 11.2 mAh battery.

[KE4FOX] also etched his own PCB, using the PCB toner transfer method, folding a sheet of transfer paper around the board to align both layers. Then he etched the board using cupric chloride. When assembling the board he realized he had made a terrible error, assuming the transceiver module’s pins went in the top layer when in fact they should have gone in the bottom layer. He solved this by soldering in the module in upside down.

He dropped the project into the 1020 and installed an SMA antenna. After he assembled the project he found out that the level shifter he used on the Arduino’s 5 V data didn’t work as expected and it was stuck at a single frequency. Something to work on for V2!

We publish a large number of amateur radio posts here on Hackaday, including fox hunting with Raspberry Pi and how to make a TDOA directional antenna.

[thanks, that Kat!]


Filed under: radio hacks

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Tuesday, August 29, 2017

AI Watches You Sleep; Knows When You Dream

If you’ve never been a patient at a sleep laboratory, monitoring a person as they sleep is an involved process of wires, sensors, and discomfort. Seeking a better method, MIT researchers — led by [Dina Katabi] and in collaboration with Massachusetts General Hospital — have developed a device that can non-invasively identify the stages of sleep in a patient.

Approximately the size of a laptop and mounted on a wall near the patient, the device measures the minuscule changes in reflected low-power RF signals. The wireless signals are analyzed by a deep neural-network AI and predicts the various sleep stages — light, deep, and REM sleep — of the patient, negating the task of manually combing through the data. Despite the sensitivity of the device, it is able to filter out irrelevant motions and interference, focusing on the breathing and pulse of the patient.

What’s novel here isn’t so much the hardware as it is the processing methodology. The researchers use both convolutional and recurrent neural networks along with what they call an adversarial training regime:

Our training regime involves 3 players: the feature encoder (CNN-RNN), the sleep stage predictor, and the source discriminator. The encoder plays a cooperative game with the predictor to predict sleep stages, and a minimax game against the source discriminator. Our source discriminator deviates from the standard domain-adversarial discriminator in that it takes as input also the predicted distribution of sleep stages in addition to the encoded features. This dependence facilitates accounting for inherent correlations between stages and individuals, which cannot be removed without degrading the performance of the predictive task.

Anyone out there want to give this one a try at home? We’d love to see a HackRF and GNU Radio used to record RF data. The researchers compare the RF to WiFi so repurposing a 2.4 GHz radio to send out repeating uniformed transmissions is a good place to start. Dump it into TensorFlow and report back.

The team is hoping to make diagnosing sleep disorders — and other ailments that disrupt sleep like Alzheimer’s and Parkinson’s — a bit easier. Boasting 80% accuracy, the team maintains this is comparable to traditional methods of monitoring sleep cycles using an EEG and technicians — with far less hassle for all involved.

All this said, sometimes extreme measures are needed to dissuade outside forces from interrupting your sleep, or enlist the aid of a cuddly terminator.

[Thanks for the tip, Itay via Gizmodo]


Filed under: misc hacks, radio hacks

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Monday, August 28, 2017

Comparison: Beretta 92FS vs. Taurus PT92

by Nicholas

One of the most popular handguns was a former U.S military sidearm (they switched to the Sig Sauer in 2017), the Beretta 92FS/M9 and related variants. The Beretta 92 has firmly established itself as an accurate and reliable pistol that serves well in hostile environments. The Beretta is a great choice as a home defense weapon or as a SHTF sidearm. The Beretta 92FS can be price prohibitive for some.

Fortunately, there is a less expensive clone of the Beretta 92-series called the Taurus PT92, which has been around since the 1980s and uses the same profile. Is it wise spending less money on a PT92, or should you save up your money and get the Beretta?

While we won’t tell you what to do, we will list the differences between the two so you can make that decision.

History and Development

Many people believe that the Taurus PT92 is a recreation of the modern day Beretta 92FS, when it is in fact a clone of the earlier Beretta 92 pistols.

In the mid-1970s, Beretta released the very first Beretta 92 pistol that utilized a heel magazine release, and a framed mounted safety similar to a 1911. Brazil decided to use the new 92 as the official sidearm of the Brazilian Army, so Beretta set up a factory in Brazil to begin producing the 92.

Taurus was an incredibly small Brazilian gun manufacturer that had been most well known for making economic revolvers. When Beretta’s contract for the Brazilian military ended in 1980, they sold the factory (including the blueprints, machines, and workers) to Taurus. It’s a decision Beretta has probably regretted, as in a few years, Taurus went from a small gun company into a major competitor.

The Beretta 92 later evolved into the Beretta 92S, which placed the frame mounted safety to the slide like we see in today’s modern Berettas. The 92S evolved into the 92SB, which moved the magazine release from the heel to the traditional position behind the trigger guard.

The 92SB developed into the 92F and then the 92FS, which squared off the trigger guard and replaced the blued finish with Beretta’s tough Bruniton finish. The Beretta 92FS serves in the U.S Army designated as the M9.  Beretta has since developed many more variants of the Beretta 92FS since then, such as the 92A1 and the M9A1, but the 92FS has remained the mainstay in their 92-line.

The Taurus PT92 has undergone many developments in its history. Unlike Beretta, Taurus kept the frame mounted safety but moved the heel magazine release to the traditional location behind the trigger guard.  Later, a decocker was added to the PT92 that allowed you to decock the gun without engaging the safety.

PT92 pistols remained in this configuration until 1997, when the cocking serrations on the slide were widened and an internal trigger lock was installed into the gun (all Taurus guns have this).  The next major change came in 2005, when Taurus added rails to the PT92 increasing the magazine capacity from 15 to 17 rounds.

Today, the new Taurus PT92 pistols are sold with rails and available in either a matte bluing or polished stainless steel finish.  They are consistently available for $150 to $250 less than the Beretta 92FS.

Here is an actual demonstration of the Beretta vs. Taurus:

Advantages and Disadvantages

While the Beretta 92 and Taurus 92 are definitely in the same family of guns, significant differences exist between the two.

Safety location

The most significant advantage to the PT92 is the location of the safety. Granted, if you prefer the Beretta’s slide mounted safety, you may disagree. The safety of the PT92 is located on the frame like a 1911, making it more accessible than the Beretta’s slide safety.

Decocking and safety

The decocking and safety are separate on the PT92.  Press the lever down to decock the pistol, and press it up to engage the safety. This means it is possible to carry the PT92 ‘cocked and locked’ like you do with a 1911. The decocking and safety lever on the Beretta are the same: press the lever down, and the gun decocks and engages the safety simultaneously. The Beretta cannot be carried cocked and locked like the PT92.

Finishes

Both can have the corrosion and rust resistant Bruniton finish, of have one of several finishes including stainless steel,

Frame construction

Both use aluminum alloys in the frame construction. While the PT92 is slightly more lightweight in build, the Beretta’s is still slightly longer (though both pistols will probably last longer than you can shoot them).

Grip

The two pistols have minor differences. The forward part of the grip frame on the PT92 is straight, whereas the Beretta’s is curved at the end (it’s been that way since the U.S military requested it) for a fuller grip.

While the Beretta 92FS is not railed like the PT92, Beretta does sell a railed option called the M9A1.

Mags

The 92FS also ships with 15 round magazines out of the box, in contrast to the PT92’s 17 round mags. Factory Beretta 17-round magazines are available for purchase separately. Mec-Gar (an aftermarket supplier of pistol magazines) manufactures 18 round magazines for both pistols. Firepower between the two pistols is equal.

Which is more reliable: the Beretta 92FS or the Taurus PT92?

In terms of reliability and accuracy, the Beretta and Taurus seem to be on equal footing. The Beretta definitely has a superior track record having served the U.S military servicemen and law enforcement officers, and military units all over the globe. The PT92 has seen military and law enforcement service across the world, but not nearly as much as the Beretta.

Quality and accuracy

This isn’t to say that the Taurus is a worse gun than the Beretta. The two pistols are nearly identical in basic design. After all, the PT92 was constructed based on Beretta 92 blueprints with the same machinery and workers, and what they perfected Taurus went back and added details to their newer ones. In that regard, overall quality and accuracy between the Beretta and the Taurus should be considered on equal ground as they used one another to improve the original design.

Optimizing the Beretta 92 for Self-Defense:

Conclusion

When it comes down to it, if you’re on a budget or have been trained to use a 1911, you’ll probably prefer the Taurus due to its lower price and safety position respectively. If you want the original manufacturer of the 92-series, prefer the slide mounted safety, or feel more comfortable with Beretta’s track record go with the Beretta 92FS or one of its variants.



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Sunday, August 27, 2017

Sorry US; Europeans Listen to Space with GRAVES

In Europe, the GRAVES radar station beams a signal on 143.050 MHz almost straight up to detect and track satellites and space junk. That means you will generally not hear any signal from the station. However, [DK8OK] shows how you can–if you are in Europe–listen for reflections from the powerful radar. The reflections can come from airplanes, meteors, or spacecraft. You can see a video from [way1888] showing the result of the recent Perseid meteor shower.

Using a software-defined radio receiver, [DK8OK] tunes slightly off frequency and waits for reflections to appear in the waterfall. In addition to observing the signal, it is possible to process the audio to create more details.

Why is there a giant vertical radar transmitter in the middle of France? The transmitter uses a phased array to send a signal over a 45-degree swath of the sky at a time. It makes six total steps every 19.2 seconds. A receiver several hundred miles away listens for reflections.

Even the moon reflects the signal when it is in the radar’s path. If you are interested in a moon bounce, you may be able to build a station to hear the reflections without being in Europe.

Of course, if you can transmit yourself, you might want to bounce your own signal off airplanes. If you want to do it old school, you could emulate [Zoltán Bay].


Filed under: radio hacks

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Lucid Dreaming | A dryspell!!!

I can't remember the last time I had a lucid! Anyone have any ideas?? It's beginning to be alarming!!!


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Friday, August 25, 2017

Lucid Dreaming | It just feels fake when I RC

So: first post, five months into learning, and nine really brief LDs. This forum is such a great resource, and I'm hoping to get some input on the areas I struggle with.

I read a lot of people saying that when you RC "you should feel that you could be dreaming at that very moment". And I never can. I believe the first one of the day, when I wake up - "this could be a false awakening". But then, if an hour later, I see one of my dreamsigns (chocolate, comics or animals!) and say; "this could be a dream", my brain instantly replies: "um - no it couldn't, becase I remember that nose pinch I did an hour ago when I woke up, and I haven't gone to sleep since then, and I remember what I've been doing in the house since I got up, and it hasn't changed shape or location in that time at all, so I know I'm still awake". So that thought goes through my head in a flash, and before I can even nose pinch - I've talked myself out of believing. And so it goes all day.

I can role play it and say : "what if I had a dream tonight that was just like this, and then I'd do a nose pinch and discover I was dreaming" - and act that out - maybe that'll be as far as I can get. But do people really believe they might be dreaming when they RC ? Even when you remember doing your last RC earlier in the day?

Jo


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Tuesday, August 22, 2017

Sniff Your Local LoRa Packets

As the LoRa low-bandwidth networking technology in license-free spectrum has gained traction on the wave of IoT frenzy, LoRa networks have started to appear in all sorts of unexpected places. Sometimes they are open networks such as The Things Network, other times they are commercially available networks, and then, of course, there are entirely private LoRa installations.

If you are interested in using LoRa on a particular site, it’s an interesting exercise to find out what LoRa traffic already exists, and to that end [Joe Broxson] has put together a useful little device. Hardware wise it’s an Adafruit Cortex M0 Feather with onboard LoRa module, paired with a TFT FeatherWing for display, and software wise it scans a set of available frequencies and posts any packets it finds to the scrolling display. It also has the neat feature of logging packets in detail to an SD card for later analysis. The whole is enclosed in a 3D printed case from an Adafruit design and makes for a very attractive self-contained unit.

We’ve featured quite a few LoRa projects here, including this one with a Raspberry Pi Compute module in a remote display. Of more relevance in a LoRa testing sense though is this look at LoRa range testing.


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Socialism in Venezuela: The Ultimate Cautionary Tale

by Isabella

The devastating crisis in Venezuela has been going on for years, though mostly below the fold of our nation’s mainstream newspapers and websites. And as the citizens of this once prosperous, oil-rich nation are literally running out of trash to rummage through for sustenance, leftist celebrities who once praised the socialist government of Hugo Chavez are strangely silent.

A few decades ago, the enigmatic Chavez was promising to reserve the great wealth of Venezuela’s oil reserves for the poor, the people he identified with and vowed to help. He was praised around the world for his cutting-edge economic plan and being a champion of the poor and of “el pueblo”, the people.

Today, in the wake of his legacy, the people of Venezuela wake up at the crack of dawn to spend their whole day in food lines for the mere chance of being able to bring home groceries. Stray dogs, cats, and even pets are diminishing as they are killed and eaten for sustenance, even the animals in the zoo aren’t safe from the starving population.

Meanwhile, tankers full of Venezuelan oil sit in the Caribbean, unsold, because the government can’t even afford the maintenance and port fees to bring them into harbors to be sold.

Where did it all go wrong?

So how did this all happen? How did a dream of a utopia for the people turn into such a nightmare?

Well, the short answer, of course, is socialism. One of the reasons you will not hear the crisis in Venezuela spoken of often among leftist politicians and celebrities is that it is a perfect example of the failures bigger government, nationalized industries, and the redistribution of wealth. These kinds of policies are exactly what these leftist pundits want to see expanded here in the United States.

They also happen to be the exact same policies that led to this devastating crisis in Venezuela.

Let’s take a look at exactly how socialist policies is destroying Venezuela.

First Roots of Freedom in Venezuela

Venezuela is an incredibly fertile and resource-rich country that, at one time, was the most prosperous country in South America. Once a colony of Spain, Venezuela gained their independence in 1810 and, beginning in 1870, under the leadership of Antonio Guzman Blanco, they were able to attract foreign investors into their economy and modernize transportation and education.

In the first half of the 20th Century after the discovery of oil in Venezuela, it slowly grew to become the world’s single largest oil importer. While the government bounced back and forth from military dictatorships, coups, and several attempts at democratic rule, in 1958 the people of Venezuela were finally able to secure a democratic leader in Romulo Betancourt of the Democratic Action Party, who was the winner of a free election.

While the 70’s saw massive economic growth amid a huge oil boom, the 80’s brought instability and violence, as the people took to the streets in riots during a depression that resulted in hundreds killed and the implementation of martial law.

The Rise of the Chavistas

In the 90’s, Hugo Chavez led two failed coup attempts and was imprisoned for two years as a result. 120 people were killed in the government’s effort to suppress these coups. However in 1998, a few years after the impeachment of President Perez, Chavez was elected president.

Chavez’ election spurred the ‘Bolivarian Revoultion’, after Simón Bolívar, the so-called “liberator” of Venezuela who was a political and military leader in the early 1800’s. With Chavez at the helm, this revolution saw dramatic changes in the constitution of Venezuela, as well as the establishment of new political parties.

This was when socialism began to take flight in Venezuela. Chavez implemented dramatic new socialist and populist-inspired economic policies, all in the name of helping the poor and leveling the wealth in oil-rich Venezuela. At the time, oil prices were high, so there was a lot of wealth to level.

In 2001, he passed 49 new laws aimed at nationalizing industry and redistributing wealth. At this time, critics began to express concern that he was trying to follow the Cuban model of consolidating all economic power to the government.

The Socialist Foundation

Over the next decade, the socialist dream of Chavez began to blossom. Surviving an attempted coup in 2004, he begins to break up Venezuela’s large land estates, which ranchers said was an attack on private property. Of course, attacking private property is exactly what socialists do.

He also moved to restrict the flow of information to the people of Venezuela by imposing harsh regulations regarding the slander of public figures in his government. And, as opposition parties boycotted elections, his followers began to dominate parliament.

In 2006 and 2007, the government continues to tighten its grip. Chavez signed a massive arms deal with Russia, marking a significant shift in Venezuela’s relationship with the United States, which Chavez had always harshly criticized. He also won his third consecutive presidential term in a massive margin.

At this point, he began to nationalize major media and telecommunication industries in Venezuela. His government also refused to renew the broadcasting licence of a major network that had been critical of his regime. This prompted massive riots in response as citizens wake up to the implications of Chavez’ intentions.

Chavez’s Grip Begins to Tighten

As Chavez attempted to nationalize more of the oil industry, major US oil companies Exxon Mobil and ConocoPhilips refused to turn over their operations to the government, and so Chavez expropriated them.

At the end of 2007, Chavez began to experience his first serious drop in support, as voters failed to pass a referendum that would expand government power over private property and the Central Bank of Venezuela. He still managed to nationalize one of the country’s private banks the following year.

In 2008 and 2009, although opposition began to gain some control in parliament and even the Caracas mayoral election, a referendum was also passed that abolished limits on presidential terms, giving Chavez a clear path towards dictatorship, in theory.

He also began to cultivate more of a relationship with Russia, by signing an oil and gas cooperation accord and participating in war exercises together.

In 2009, Chavez devalued the bolivar for the first time, by 17% against the US dollar for “priority” imports, and by 50% so-called non-essential items, in an attempt to boost revenue from oil exports. Devaluing the bolivar was a practice his successor Maduro would follow, eventually leading to the devastating poverty we witness in Venezuela today.

The Beginnings of a Crisis

In 2010, massive floods in the country provided Chavez with an unexpected opportunity to gain more power. The phrase “never let a good crisis go to waste” comes to mind. Many begin to fear this slippery slope will lead to full-on authoritarianism.

In the following years, price control continued as the government tried to protect against inflation. Any companies that did not comply were threatened with expropriation. Media companies face massive fines to avoid being taken over by the government.

In 2012, Chavez won his fourth term in office. However, in 2013, he passes away after a long battle with cancer. Nicolas Maduro, the current president, won the emergency election in a narrow margin. He had been Chavez’s’ chosen successor, so he vowed to continue Chavez’ mission.

As inflation rose, the National Assembly gave Maduro emergency powers for a year, which prompted mass protests across the country. He promptly used these new powers to limit profit margins.

The Foundation Begins to Crumble

In 2014, protests spread across the country in favor of the opposition party. The government accused the opposition of trying to attempt a coup, and used this reasoning to violently suppress the uprisings.

The Maduro government continued in 2014 to implement harsh cuts in public spending as oil prices began to drop dramatically. Through 2014 and 2015, as the opposition party began to be more vocal and gain more public support, the Maduro party pushed back by accusing various figures of assassination and coup attempts.

In 2015, the opposition party briefly wins 2/3 majority in the National Assembly, only to have several of its members resign under pressure from the Socialist-controlled Supreme Court.

In 2016, Maduro continued to fight inflation by continuing to devalue the bolivar and restricting public spending. However, his government also refused to allow nationalized oil companies to trade privately. This spurred mass outrage from the citizens of Venezuela, which is what caught the attention of the international media.

Now What?

This year, 2017, tensions have come to a head. Constant clashing and power struggles between the Socialists and opposition parties in the government have been reflected in the populace by constant clashing in the streets, including several young men being shot and killed by the police.

The Venezuelan government’s attempts to violently respond to the protests as well as suppress the opposition parties has caught criticism from many other Latin American countries, concluding in Venezuela’s decision to leave the Organization of American States, or OAS over pressure to end the harsh government crack-down of opposition.

While the leftist media here in the United States is convinced there is a constitutional crisis here in the United States nearly every week, Venezuela has been in the midst of a constitutional crisis for at least six months, as Maduro prepares a referendum on a new constitution to be written.

 

Thousands of protests have erupted in response to the newly proposed constitution, as many claim it will be very un-democratic. People have also been protesting the drastic food shortages and lack of necessities such as toilet paper, running water, and basic medical supplies.

 

Given the climate of conflict, protest, and devistating poverty of the last year in Venezuela, there is no telling what will happen in the face of the latest move from the new constitutional congress.

On August 8th, the new constitutional assembly declared themselves superior to all other branches of government. This is the most drastic move yet from the Maduro government to crackdown on opposition party politicians and voices.

“Opposition lawmakers said they were barred from entering the gold-domed legislative palace after security forces led by Rodriguez broke into congress late Monday,” Time reports.

The Ultimate Cautionary Tale of Socialism

What has happened in Venezuela should stand as a stark warning to the world of just how impossible it is for socialism to succeed. Wealth redistribution seemed promising when oil prices were high, but companies were nationalized and prices dropped, the government ultimately had no choice but to expand their own power as the people began to starve.

The more the people–the very people Chavez claimed to identify with and want to help–spoke out against what the government was doing, the more Maduro tried to consolidate power to himself.

The Maduro government isn’t interested in a healthy economy, it isn’t interested in creating wealth for its people, it’s only interested in keeping its own ideology alive, even as everything wrong with this ideology is causing Venezuela to crumble around it.

Most ironic of all, of course, is that Venezuela has turned into the kind of country that most Marxists think they’re fighting against. While socialists claim they want to eradicate poverty and empower the people, this socialistic system has damaged the economy so drastically that the people are hungry while tankers of oil sit rotting in the Caribbean.

And Chavez’s daughter is the wealthiest person in Venezuela.

So remember this the next time you hear a politician extolling the benefits of nationalized industry or harsh restrictions on private corporations. Venezuela is an incredibly fertile land and, with a free market economy, could easily be the wealthiest nation in Latin America. This would generate wealth for everyone, both at the top and the bottom.

Chavez’s socialism has done nothing but drain the wealth out of Venezuela and leave the people angry and starving. It is unlikely that any real change will happen in Venezuela without much more bloodshed, starvation, and death.

So how is that for a cautionary tale?



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ESP8266 Based Internet Radio Receiver is Packed with Features

Have a beautiful antique radio that’s beyond repair? This ESP8266 based Internet radio by [Edzelf] would be an excellent starting point to get it running again, as an alternative to a Raspberry-Pi based design. The basic premise is straightforward: an ESP8266 handles the connection to an Internet radio station of your choice, and a VS1053 codec module decodes the stream to produce an audio signal (which will require some form of amplification afterwards).

Besides the excellent documentation (PDF warning), where this firmware really shines is the sheer number of features that have been added. It includes a web interface that allows you to select an arbitrary station as well as cycle through presets, adjust volume, bass, and treble.

 

If you prefer physical controls, it supports buttons and dials. If you’re in the mood for something more Internet of Things, it can be controlled by the MQTT protocol as well. It even supports a color TFT screen by default, although this reduces the number of pins that can be used for button input.

The firmware also supports playing arbitrary .mp3 files hosted on a server. Given the low parts count and the wealth of options for controlling the device, we could see this device making its way into doorbells, practical jokes, and small museum exhibits.

To see it in action, check out the video below:

[Thanks JeeCee]


Filed under: digital audio hacks, radio hacks

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Sunday, August 20, 2017

Don’t Miss Watching this Solar Eclipse High Altitude Balloon Online

[Dan Julio] let us know about an exciting project that he and his team are working on at the Solid State Depot Makerspace in Boulder: the Solar Eclipse High Altitude Balloon. Weighing in at 1 kg and bristling with a variety of cameras, the balloon aims to catch whatever images are able to be had during the solar eclipse. The balloon’s position should be trackable on the web during its flight, and some downloaded images should be available as well. Links for all of that are available from the project’s page.

High altitude balloons are getting more common as a platform for gathering data and doing experiments; an embedded data recorder for balloons was even an entry for the 2016 Hackaday Prize.

If all goes well and the balloon is able to be recovered, better images and video will follow. If not, then at least a post-mortem of what the team thinks went wrong will be posted. Launch time is approximately 10:40 am Mountain Time (UTC -07:00) on Aug 21 2017, so set your alarm!


Filed under: gps hacks, radio hacks

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Friday, August 18, 2017

Lucid Dreaming | Reviving Lucidity Questions

So it's been a good three years since I've gotten into this practice and I want to start it up again. Back into meditation, giving up smoking, gone vegan, other info I can't discuss. Skimming around the old threads and tutorials I fear that I'm forgetting some stuff. As for reviving my old routine:

1) Record dreams upon waking up.
2) Supplements galore: 5-HTP, B6&12, et cetera.
3) Reality checks. Looking at my broken finger and checking if it's still broken.
4) Waking up at absurd times of the night to induce deeper sleep.
5) MILDs.

Luckily over this hiatus I've been getting a few sprinkle of lucid dreams, some vivid, others forgettable. As for questions:
How much has changed with the website and practices(new& old)?
Has anyone gone insane yet?
Are there any new techniques that I should review for LD'ing?
Tips, tricks, advice?


I'll be here for a while whilst playing with that 'weightlifting' forum, good lord. Nice to see this community again.


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Lucid Dreaming | Any suggestions??

I'm back after not practising for a long time....iv been on a small journey practising meditation daily which after a few months should help with my LDs.Iv recently noticed that alot of my dreams take place in locations I have never been before.
Iv tried asking myself in the waking life if iknow where i am when in different places but i can never remember to keep it up....its very easy to forget to ask yourself due to constant distractions......is there anything else I could do to train myself to become aware in my dream when I find myself in a place iv never been before?? Thanks =)


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Thursday, August 17, 2017

Crowdsourcing The Study Of An Eclipse’s Effect On Radio Propagation

If you are an American, you’ll probably now find yourself in one of three camps. People who are going to see the upcoming solar eclipse that will traverse your continent, people who aren’t going to see the eclipse, and people who wish everyone would just stop going on incessantly about the damn eclipse.

Whichever of those groups you are in though, there is an interesting project that you can be a part of, an effort from the University of Massachusetts Boston to crowdsource scientific observation of the effect a solar eclipse will have on the upper atmosphere, and in particular upon the propagation of low-frequency radio waves. To do this they have been encouraging participants to build their own simple receiver and antenna, and make a series of recordings of the WWVB time signal station before, during, and after the eclipse traverse.

This is an interesting and unusual take upon participation in the eclipse, and has the potential to advance the understanding of atmospheric science. It would be fascinating to also look at the effect of the eclipse on WSPR contacts, though obviously those occur in amateur bands at higher frequencies.

If you are an EclipseMob participant, we’d love to hear from you in the comments. Does your receiver perform well?

Thanks [Douglas] for the tip.


Filed under: news, radio hacks

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Saturday, August 12, 2017

FLEX Pager Protocol in Depth

We love pager hacks. One of our earliest head-slappers was completely reverse-engineering a restaurant pager’s protocol, only to find out that it was industry-standard POCSAG. Doh!

[Jelmer] apparently scratches the same itch, but in the Netherlands where the FLEX protocol is more common. In addition to walking us through all of the details of the FLEX system, he bought a FLEX pager, gutted it, and soldered on an ATMega328 board and an ESP8266. The former does the FLEX decoding, and the latter posts whatever it hears on his local network.

These days, we’re sure that you could do the same thing with a Raspberry Pi and SDR, but we love the old-school approach of buying a pager and tapping into its signals. And it makes a better stand-alone device with a lot lower power budget. If you find yourself in possession of some old POCSAG pagers, you should check out [Jelmer]’s previous work: an OpenWRT router that sends pages.


Filed under: radio hacks, wireless hacks

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Friday, August 11, 2017

Lucid Dreaming | numbers technique

This technique works very well for me, Thanks G'd.
Have you ever heard about the "Grabovoi numbers"? I don't know much about the guy, but the lucid dream code works out, it lead you to the frequency of lucid dreaming.
This is the code for becoming lucid in your dreams: 89 10 48.
Memorize it, write it down, visualize it, think about this number all day long as a mantra. Do the usual wake back to bed, keep thinking about the code. You may combine it with other methods as well. Good luck and may you have sweet lucid dreams ;-)


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15 Bug Out Bag Essentials You Must Have

by Bethany

Bug out bags are essential items for any survivalist. Deciding what to put in your bag can be difficult. Each person has different needs and requirements. You may have a large family, or you could be a single person, prepping for the future. A bug out bag is meant to carry items to allow you to survive for 72 to 96 hours when you evacuate due to emergencies.

There is no right or wrong answer to the items you include! Some people have multiple bug out bags for different scenarios. You may have one particular scenario in your head, or you may want to be prepared for anything you encounter. No matter the purpose of the bag, there are some items I consider essential and have in all of my bags.

CRUCIAL TIP: Your bug out bag must be made according to YOUR climate and region. If you live in a region that has frequent snowfalls, you must take that into consideration. I live in Ohio, so my list may be vastly different compared to someone living in the South! Other considerations are your age, the number of people in your group and any medical conditions. All of those factors will determine the items you pack in your bug out bag.

#1. Tent/tarp/poncho

The elements can kill quickly if you are left in them. You don’t need a fancy tent in your BOB. In fact, a huge tent will take up too much space in your bag. The shelter can be anything from a one-person tent to a poncho that can keep the rain off your body. Some people include tarps if they have space in their bags.

All too often, preppers include things like food and fire starting devices, but they forget how quickly the elements will kill you, so be sure to put it at the top of your list!

#2. Things to keep you warm

Blankets or a sleeping bag go right along with the idea of shelter. Blankets keep you warm to help reduce hypothermia. Depending on the bag you pick, you might be able to tie a sleeping bag on the exterior of the bag. Some bags include straps for this scenario. Wool is another choice because it retains heat. However, wool blankets are heavy, so many survivalists opt not to include them.

Something we keep in our bug out bags are hand warmers, also known as Hot Hands. They can add extra warmth to your blanket if the temperature rapidly drops. Plus, Hot Hands are rather small and compact, perfect for a BOB!

mylar blanket

Emergency Mylar blankets come in small baggies and are the perfect choice if you are running out of space in your bag. They can hold in the heat during an emergency, and the package is very small. You can keep multiple Mylar blankets everywhere, including your car!

#3. Ways to start a fire

In your BOB, you want to keep multiple sources of fire. Here is what I have in mine:

  • Box of matches – waterproof ones are the best!
  • a couple of lighters
  • Flint and steel

fire

Starting a fire is tricky at times, such as after a hard rain or during windy conditions. Some people like to include extra things that get fires started like candles and cotton balls.

#4. Water Filtration System

Water sources might surround you, but that doesn’t mean you can safely drink from those sources. Learning how to filter water is an essential skill. In your BOB, you have to include ways to safely filter water for each person in your group, whether you are alone or with your family.

There are a few choices to consider. I keep a personal straw filter for each person in my family. The LifeStraw Personal Water Filter is our favorite; each member of our family has one. They are an investment, but you can find them on sale if you are on a budget. Sawyer Mini Water Filtration System allows you to drink from a bottle of water, filtering it as you drink. Plus, it is rated up to 100,000 gallons of water, which is impressive.

Another choice is a bottle that filters water when you add in the water. Find one that clips right onto your BOB! The LifeStraw Go Water Bottle filters 1,000 liters of water.

The other choice would be to purchase bottles of water purification tablets. These tablets are cheap, allowing you to purchase dozens of bottles for little cost. When using tablets, you have to wait 30 minutes, on average, before drinking.

gerber suspension multitool

#5. Everyday Multi-Tools and Knives

Everyone needs to have a multi-tool in their bag. While you also might want to carry a separate knife, multi-tools have everything you might need in one place. They allow you to keep everything in one place. The only thing I do suggest is that you invest in a nice multi-tool, such as the Gerber Suspension, which has 11 tools.

Most survivalists opt to carry a knife with them. A larger knife can accomplish dozens of tasks like cutting weeds and kindling for the fire. A knife is also an essential tool for skinning and butchering animals if you hunt. The Gerber Bear Grylls is made with carbon featuring a serrated edge. It is a highly-rated choice.

You can do like our family and opt to carry a bit of everything. We have knives and multi-tools. However, if I had to pick just one, I would always pick a larger knife!

#6. A Form of ID

Identification won’t help you prevent a disaster, but they may be a lifesaver. Someone might find you and, in order to give you first aid, they could use whatever personal info they could find about you (blood type, allergies etc). Or, you need an ID to get into your bank account and access any of your assets. Luckily, identification doesn’t take up much room in your bag.

Forms of identification and other personal information include:

  • Driver’s license or state-issued ID
  • Birth certificate
  • Passport
  • Social security card
  • Military ID
  • Blood type
  • Allergies
  • Phone numbers of your loved ones
  • …and so on

#7. Food

Ideally, you will have 72 to 96 hours of food stored in your BOB. To keep your bag itself light, you don’t want to pack any mason jars. However, you can put a few small canned goods from the store. Think of your calorie count and blood sugar, which may drop after long periods of walking. Food like chocolate and dried fruit has high calorie and lots of sugar, perfect if you start feeling a bit lightheaded while walking. Both of those foods can increase your blood sugar, and chocolate contains caffeine which can give you a boost in energy.

You also want ready to eat meals or things you can cook over a fire. Dehydrated meat, like jerky, helps with the protein needs. If your bag can handle it, considered a few cans of meat like shredded chicken or beef. If you dehydrate your food, you can make dehydrated vegetable soup that just needs water and heat to reconstitute. Other great options include trail mixes and granola bars. Trail mixes e2552de

When considering the food you are packing, think about the calorie intake. Chances are you will be on the move a lot, burning 4,000 calories or more depending on the temperature. Each person needs at least 2,000 calories per day in their bag. If you have a nursing mother in your group, add 500 calories extra to her bag! I often have a nursling, so I must remember to pack extra calories for myself.

first aid kit

#8. First Aid Kit

Including a first aid kit in your BOB is a clear must-have item. You never know what you will encounter. Unfortunately, you have to be selective about what you include, unlike your medical kit at home which can be extensive. What do I include in my BOB medical kit? Here are my top picks!

  • Painkillers such as Tylenol and sprays
  • Bandages
  • Gauze and tape
  • Butterfly closures
  • Hydrogen peroxide
  • Benadryl (pill and cream for bug bites)
  • Sting relief for bees and wasps
  • Scissors
  • Medications required on a regular basis
  • Burn ointment or cream
  • Stitches kit
  • Penicillin or some antibiotic
  • Anti-diarrhea medication
  • Sunblock, because you don’t want a sunburn at this time!

The list of things you could include in your BOB first aid kit is endless, but you have to keep amount down to reduce the weight. It can be hard to decide because you always think “what if I need that.” Pick the items you think you will need the most and stash a larger first aid kit at your bug out location (if you have one).

#9. Extra Clothes

Unless you have small children with you, don’t pack too many clothes for you. They will weigh down the bags. I always keep a lightweight jacket with me (unless it is winter time), but you can tie that around your waist or bag itself.

You should also include a simple change of clothing, such as clean underwear, shorts or pants, and a shirt. I also keep additional socks in my bag in case my feet get wet.

Careful: wet feet can lead to hypothermia in cold regions. If possible, bring along an extra pair of shoes and thick socks, such as wool, that wick away moisture while keeping your feet toasty warm.

#10. Sanitation Supplies

Germs travel quickly during a crisis. You protect yourself and your family, sanitation should be of utmost importance to reduce infections. A roll of toilet paper is easy to include in the bag. Hand sanitizer is a must for every person in the group. Soap and mouthwash for each person help to reduce the spread of germs. For dental care, you should include floss, a toothbrush and toothpaste.

Females and babies have other considerations as well. Females must have sanitary napkins and tampons stashed in their bag. Bacteria can spread quickly. Tampons without applicators are smaller, but you must use hand sanitizers BEFORE and AFTER use.

Sanitary napkins can also be used in a first aid scenario as a dressing.

If you have a baby in the group, you know that diapers are a must. Depending on your plan, there are a few things you can do.

Pack as many disposable diapers and wipes as you can fit. Don’t forget diaper rash cream which is beneficial for everyone in the group!

Use cloth diapers. With cloth diapers, you will need to find a stream to wash them out in often and leave to dry. We use cloth diapers in our regular life, disposable diapers for the BOB and cloth diapers stashed in our final location plan.

paracord bracelet

#11. Paracord

Survivalists love paracord. You can find lanyards, bracelets and keychains made from paracord, making it easy to keep on your body at all times. Here are a few ways you can use paracord.

  • Tying a shelter together.
  • Make a sling for a broken arm.
  • String a clothesline.
  • Hang tools from your belt.
  • Use inner threads as fishing lives.
  • Make a hammock.

The possibilities are endless. You want paracord 550, meaning it can hold up to 550 pounds.

#12. Communication

If the grid goes down, cellular devices will not work. How are you supposed to know what is happening? The best thing you can take with you is a portable radio with short wave receiving capabilities. You can use this to listen to advisories or the news to let you know what is happening.

Another great addition to your bag is a pair of walkie-talkies. If you are in a group and need to split up, walkie talkies allow you to stay in contact and let each other know if you need any help.

flashlights

#13. Flashlights

Having a light source available is a great thing for a BOB. While a lantern is nice, they take up too much room in a bag. The flashlight you pick should be durable; aluminum is an ideal material. Brightness is a factor. LED lights, even if they are small, light up an entire campsite, making them a great choice.

Remember to pack extra batteries for your flashlight. AA batteries are the easiest to find and cheap. It is a good idea to try to line up your items to all take the same batteries. You don’t want to carry several varieties with you.

Hank crank is a definite plus, because you won’t rely on batteries anymore.

handgun

#14. Firearm

You already need a knife, so why do you need a firearm? There are two reasons you want a firearm with you in your BOB. First, it provides protection. In the event of a global emergency, people will be in a panic. People will attack each other if they feel it will benefit them. You don’t want to be the person they take down.

Second, firearms are beneficial for hunting. If you go through the 96 hours of food and still have yet to find a location to stay, a firearm allows you to hunt for your food. Depending on your region, you do want to make sure you are using the correct caliber to take down the game in your area.

Firearms should only be with those who are trained to use them. In the wrong hands, firearms are a threat to a group. Ensure only trained individuals and adults have access to the firearms.

#15. Duct Tape

Duct Tape can fix nearly anything, which is why you want it in your BOB. If you need to fix a tarp, duct tape is the answer. If your boat has a hole, you can patch it with duct tape. For its size and weight, duct tape is a must have item. The possibilities are endless. Some people do prefer Gorilla Tape, claiming that it is stronger.

This list is far from exhaustive. If you have extra room in your bag, you can include things like fishing line and lures, a deck of cards (for boredom), a sewing kit, and a camp ax. The list of possibilities is endless.

Remember, bugging out should be the LAST resort. You want to try to bug in for as long as possible. Pack your BOB according to what you need in your region and your family.

What items do you consider essential for your bug out bags? Let us know in the comments below.



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Tuesday, August 8, 2017

ColibriNANO USB SDR Receiver Reviewed

At first glance, the ColibriNANO SDR looks like another cheap SDR dongle. But after watching [Mile Kokotov’s] review (see video below), you can see that it was built specifically for software defined radio service. When [Mile] takes the case off, you notice the heavy metal body which you don’t see on the typical cheap dongle. Of course, a low-end RTL-SDR is around $20. The ColibriNANO costs about $300–so you’d hope you get what you pay for.

The frequency range is nominally 10 kHz to 55 MHz, although if you use external filters and preamps you can get to 500 MHz. In addition to a 14-bit 122.88 megasample per second A/D converter, the device sports an Altera MAX10 FPGA.

In addition to interfaces to different software packages, the dongle works with remote software. The idea is to put the dongle and an antenna somewhere advantageous (that is, high and radio-quiet) and then use a Raspberry Pi or similar computer to pipe signal over the Internet.

If you don’t want a dongle, we can endorse [Lukas’] build from scratch. If you are looking more for a getting started resource, check out what [Richard Baguley] had to say about SDR.

 


Filed under: radio hacks

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Monday, August 7, 2017

One Transistor RTL-SDR Upconverter

Even if you haven’t used one, you’ve probably seen the numerous projects with the inexpensive RTL-SDR USB dongle. Originally designed for TV use, the dongle is a software defined radio that many have repurposed for a variety of radio hacking projects. However, there’s one small issue. By default, the device only works down to about 50 MHz or so. There are some hacks to change that, but the cleanest way to get operation is to add an upconverter to shift the frequency you want higher. Sounds complicated? [Qrp-Gaijin] shows how to do it with a single transistor. You can see some videos of the results, below.

Actually, [Qrp-Gaijin] built an earlier version but wasn’t satisfied with the performance. He found that his original oscillator was driving an overtone crystal at its fundamental frequency. The device worked, but only because the oscillator was putting out harmonics, including the third harmonic at the actual needed frequency (49.8 MHz).

Changing the oscillator topology did the trick. A tuned circuit prevents the oscillator from having sufficient gain at the fundamental frequency. He did some other tweaks and–according to the post–he still has some future improvements he would like to make.

There have been efforts to improve the RTL-SDR circuitry, too. If you want to see a more complex upconverter, you might want to look at one based on circuit modules.


Filed under: radio hacks

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Friday, August 4, 2017

Lucid Dreaming | transitioing from closed eye visials to lucid dream

I do night shift at a petrol station, when I go to bed after a shift I sometimes see customers when I close my eyes. Its more sensing their precense than seeing them but I can sense what they look like. What technique could i use to transition to lucid when this happens?


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The Best SHTF Rifle Cartridge

by a guest contributor

The AR 15 has a reputation as a SHTF firearm, and while there is a reason for this reputation, a lot of us forget exactly why it’s one of the better options. We stock up on the 5.56×45 NATO and the tactical rifles that are chambered for this cartridge, and we can tell you why we believe it’s the best SHTF rifle cartridge out there.

Before we jump into the meat of the article, we do want to point out that there is no one all around, godsend, holy-grail of a cartridge out there. While we have gone with the 5.56×45 round, we are in no way downplaying the effectiveness of other combat rifles or even hunting rifle cartridges. At some point, you just have to make a choice and have the facts to back it up.

Why the 5.56×45

In this article we are going to look at several performance categories and compare the data from five 5.56×45 rounds. Below are five rounds that we have selected for looking at these categories. This is a small sample size for the options that are out there but will give us a look at what this cartridge can do.

  • 56×45 NATO Hornady BTHP Superformance Match 75gr
  • 56×45 NATO Federal American Eagle FMJ 55gr
  • 56×45 NATO Winchester FMJ 55gr
  • 56×45 NATO Hornady FMJ Black 62gr
  • 56×45 NATO Magtech HPBT 77gr

Weight

While having ammo stocked away somewhere might make this section irrelevant for some, the lighter weight of the 5.56×45 NATO compared to other cartridges is important to note.

If you’re having to go on the move for a few days or haul out somewhere quickly, these lightweight rounds are going to allow you to carry much more ammo without being fatiguing. In survival situations, cutting down on unnecessary weight and reducing the amount of fatigue can be a major factor in staying alive.

Range

The effective range of a cartridge, especially one to be used in survival situations, is extremely important. From CQB to shots at several hundred yards, a go-to SHTF rifle cartridge needs to have the capabilities for all of these ranges. While up close and personal isn’t an issue for most rifle cartridges, not all shots are going to be at 25 yards. If you are put in a position where you have to take shots at 50 to 200 yards, are you going to be confident in taking the shot?

Using our selected rounds, let’s take a look at the short range trajectory measuring bullet drop (in inches) over the course of the bullet’s flight.

Graph 1

Most 5.56×45 ammunition you go with can handle shots out to 100 yards. If you have good optics, you can even extend that range with the flat trajectory of this cartridge. The heavier bullets are going to take some more adjustments.

But what about extended ranges?

Graph 2

The trajectory for the 5.56×45 rounds and the cartridge as a whole is still relatively flat out to 300 yards. Once you get into the 400-yard range, you are looking at some heavy adjustments to shot placement while 500 yards is tough shooting for just about anyone. However, if you compare the trajectory of the 5.56×45 vs the 7.62×39, the latter just shows too much bullet drop to even be an effective round out past the 300-yard mark, which is one of the reasons we picked the 5.56×45 for this article.

Of course, none of this matters if the bullet doesn’t have any pop behind it.

Stopping Power

When things go south, and you are fighting for survival, the opportunity might arise that you have to protect your own or you must go out and hunt for food. Both of them require a cartridge that is going to be able to provide enough stopping power to deter and kill targets.

Stopping power encompasses several different factors such as the energy associated with the bullet traveling downrange, the bullet’s penetration, and the wound created. In this section, we will take a look at our selected 5.56×45 rounds and discuss how their kinetic energies make them a viable cartridge when SHTF.

Like the trajectories, we are following the bullets from the muzzle out to 500 yards.

Graph 3

What we are measuring is the force (ft.lbs) that is associated with the bullet and will be transferred to the target on impact.

While there are more deadly cartridges on the market, these 5.56×45 rounds are carrying over a 1,000ft.lbs of force at 50 and 100 yards where the vast majority of shots are going to fall. Even out past these ranges we are still talking about 500-800 at 400 yards.

Most criticism for the 5.56×45 is that it loses its effectiveness at distances out past 100 yards. And yes, they drop off, but 700ft.lbs of force slamming into is going to make you turn the other way, and we can’t be told otherwise.

Recoil

The low recoil of this cartridge provides the biggest reason we like the 5.56×45 cartridge for when SHTF. Take a look at the recoil of the five 5.56×45 NATO rounds we have been looking at.

Graph 4

photo source: Shooter’s Calculator

All of the 5.56×45 rounds we have selected and most factory loads have less than 10ft.lbs of recoil energy generated when firing. What this means in our eyes is you have a firearm that can be handled easily in close quarters and can be fired in semi-auto or auto for successive shots without losing too much accuracy. That’s a game changer for survival situations.

Accuracy

Look, you can read all the blogs you want of some guys groupings, but the simple fact is that accuracy depends so much more on the shooter than on the equipment. While your firearm, optics, and the cartridge itself needs to be of high enough quality to perform reliably, most factory loads are going to perform as well as the rifle operator is trained.

The 5.56×45 has minimal recoil compared to other cartridges used for similar purposes, short range trajectory is relatively flat, and even long range trajectory is manageable with a high-quality scope that has been sighted correctly. With some time on the range, the 5.56×45 cartridge’s bullet is going to go where you put it.

Price and Availability

Below, we have listed some of the retail prices for the rounds that we looked at in this article. As you can see, it can be expensive, or it can be relatively cheap. These rounds can often be found in bulk quantities as well. What matters is that you are compiling a stock of ammunition that you are comfortable and confident in and that will fit your shooting situation.

Availability, as most of us have experienced, can swing one way or the other pretty wildly depending on a lot of outside influences. For right now, things are looking good, and you should not have any problems getting your hands on the specific round you need. With that, things can shift any day so don’t put off stocking up for too long.

Ammunition Price
5.56×45 NATO Hornady BTHP Superformance Match 75gr

 

$17.79 (20 rounds)
5.56×45 NATO Federal American Eagle FMJ 55gr

 

$53.99 (120 Rounds)
5.56×45 NATO Winchester FMJ 55gr

 

$8.99 (20 Rounds)
5.56×45 NATO Hornady FMJ Black 62gr

 

$12.49 (20 Rounds)
5.56×45 NATO  Magtech HPBT 77gr

 

$600 (1,000 Rounds)

The Drawbacks

We don’t believe there is a perfect round, especially when SHTF. There are cartridges that have better performance characteristics for certain situations. The 5.56×45 cartridge, while an excellent self-defense round for when things go south, it does have its weaknesses when compared to other cartridges.

It does not have the stopping power of other cartridges used on the AR platform and other high powered rifles. This, of course, means you get some of the better qualities of the 5.56×45 that we have discussed earlier. For possible intruders, it’s got enough force behind it to dispatch, incapacitate, and at the least deter unwanted guests.

Where it falls short is in the big game hunting category, especially at distances of 200 yards or more. When SHTF, sooner or later hunting is going to be a factor in your ability to survive. Small game and even deer within 100 yards are still possible. With the right shot, you might even be able to take deer a bit further than 100 yards without having to spend the day or night tracking a wounded animal. For anything larger, the 5.56×45 just falls short compared to other cartridge options.

Conclusion

Like we stated at the beginning, there are plenty of cartridges available that are viable options. What we hope is that we presented the case for the 5.56×45 NATO round as a go to rifle cartridge for when SHTF.

Its low recoil makes it fabulous for handling in tight situations, it has a flat trajectory that allows you a wide range of shots and has the knockdown power to bring down targets within 200 yards and at the minimum deter them at increased distances. It’s readily available ammunition, and we think that if you give it a go, you might find you have a new favorite cartridge to stock up on.



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Thursday, August 3, 2017

Cascade LNAs and Filters for Radioastronomy with an SDR

It may not be the radio station with all the hits and the best afternoon drive show, but 1420.4058 MHz is the most popular frequency in the universe. That’s the electromagnetic spectral line of hydrogen, and it’s the always on the air. But studying the H-line is a non-trivial task unless you know how to cascade low-noise amplifiers and filters to use an SDR for radio astronomy.

Because the universe is mostly made of hydrogen, H-line emissions are abundant, and their distribution can tell us a lot about the structure of galaxies. The 21-cm emission line is so characteristic and so prevalent that we used it as a unit of measurement on the plaques aboard the Pioneer probes as well as in the instructions for playing back the Voyager recordings. But listening in on 21-cm here on Earth requires a special setup, which [Adam (9A4QV)] describes in a detailed paper on the subject (PDF). [Adam] analyzes multiple configurations of LNAs and filters, both of which he sells, to determine the optimum front-end for 21-cm work. His analysis is a good primer on LNAs and explains why the front-end gear needs to be as close to the antenna as possible. Using his LNAs and filters and an SDR dongle, a reasonable 21-cm rig can be had for about $200 or so, less the antenna. He promises a follow-up paper on homebrew 21-cm antennas; we’ll be looking forward to that.

Not keen on the music of the spheres and prefer to listen to our own spacecraft instead? Then read up on the Deep Space Network and how you can snoop in.


Filed under: misc hacks, radio hacks

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Wednesday, August 2, 2017

Lucid Dreaming | Audio for lucid dreaming

Hello guys I would like to share with you this tool to have lucid dreams:


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Tuesday, August 1, 2017

Amateur Radio Just Isn’t Exciting

As ARRL president, [Rick Roderick, K5UR] spends a significant amount of time proselytising the hobby. He has a standard talk about amateur radio that involves tales gleaned from his many decades as a licence holder, and features QSL cards from rare DX contacts to show how radio amateurs talk all over the world.

He’s delivered this talk countless times, and is used to a good reception from audiences impressed with what can be done with radio. But when he delivered it to a group of young people, as Southgate ARC reports, he was surprised to see a lack of interest from his audience, to whom DX or contesting just don’t cut it when they have grown up with the pervasive Internet. Writing in the 2016 ARRL Annual Report, he said:

“Change generally doesn’t come easy to us. But when I looked out at that group of young faces and saw their disinterest in traditional ham pursuits, I realized that I had to change. We have to change. It won’t come easy, but it’s essential that we get to work on it now.”

If you were to profile a typical group of radio amateurs, it would not be difficult to see why [K5UR] found himself in this position. It might be an unflattering portrait for some amateurs, but it’s fair to say that amateur radio is a hobby pursued predominantly by older more well-off men with the means to spend thousands of dollars on commercial radios. It is also fair to say that this is hardly a prospect that would energize all but the most dedicated of youthful radio enthusiasts. This is not a new phenomenon, where this is being written it was definitely the case back in the days when they were issuing G7 callsigns, for instance.

Were Hackaday to find ourselves in the position of advising the ARRL on such matters, we’d probably suggest a return to the roots of amateur radio, a time in the early 20th century when it was the technology that mattered rather than the collecting of DXCC entities or grid squares, and an amateur had first to build their own equipment rather than simply order a shiny radio before they could make a contact. Give a room full of kids a kit-building session, have them make a little radio. And lobby for construction to be an integral part of the licensing process, it is very sad indeed that where this is being written at least, the lowest tier of amateur radio licence precludes home-made radio equipment. Given all that, why should it be a surprise that for kids, amateur radio just isn’t exciting?

We’ve shown you some fantastic amateur radio builds over the years. If you have a youngster with an interest in radio, show them a BitX transceiver, or the world of QRP.

Header image: enixii. [CC BY 2.0]. We hope these snoozing kids aren’t in the middle of a lecture on amateur radio.


Filed under: radio hacks

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How Liberals Try to Demasculinize the Military

by Isabella

Last week, President Trump dropped a bombshell Tweet announcing that transgender people would no longer be allowed in the military.

The obviously controversial announcement comes in the midst of several years of debate surrounding the topic of transgender people in the military.

Earlier this year, Bradley Manning, aka Chelsea Manning, was released from prison. Manning was sentenced in 2013 for sharing classified documents with WikiLeaks, and after receiving his sentence of 35 years, he announced through his lawyer that he wanted to live his life as a woman.

What happened to Manning following this shocking turn of events is a poignant vignette of the obstacles a transgender person in the military would face. He attempted suicide several times while incarcerated, and he also petitioned the court to provide various “treatments” that would allow him to try to be more feminine–from hormone treatments to full-blown “gender reassignment” surgery.

Then, before Obama left office, he pardoned Manning. At this point, Manning had become a hero of the transgender movement, (almost as if that’s what he had been put in prison for in the first place, rather than violating the Espionage Act) and a national discussion about transgenders serving in the military was already well under way.

While liberals might still be in denial, it is hard to deny the fact that the principal reason for Trump’s election was a response from the American people to eight years of President Obama’s social justice warrior policies taking precedence over issues such as military might and the economy. And one of the ways that the Obama administration’s far-left values affected our country most dramatically was through his military policies.

Many on the right have criticized Obama for using the US military, the most powerful military force in the history of human civilization, as a sort of freak experiment for his socially radical leftist ideals. While those on the left, quite happily enjoying the cushy freedom that can only be maintained by such a powerful military, hailed the changes the Obama administration made to military policy, clearly those on the right, whose interest is in the protection of the US homeland and the security of our troops, felt differently.

While the Trump campaign’s most prominent messaging was focused on more stringent immigration policy from Latin America and the Middle East and creating jobs, one promise Trump made on the campaign trail that might have sailed over the heads of those on the left was the promise to bring back strength and honor to the US military.

The reason was, despite all valid criticism of the now-president, he was able to tap into the hearts and minds of those who had been alienated and brow-beaten for the last eight years with leftist lectures on equality and confusing gender pronouns. His base supports the military, and many of them are active duty or veterans, and strengthening our military after eight years of Obama was vital to these voters.

This move from Trump marks a determination to carry out this promise, which is, in essence, to bring masculinity and patriotism back to the military. Because that is what Obama was clearly trying to destroy, and I would like to illustrate to you how he did this.

“Don’t Ask, Don’t Tell”

One of the most famous cases of the Obama administration feminizing and liberalizing the military was his famous repeal of the “Don’t Ask, Don’t Tell” policy. This barred homosexual individuals serving in the military from being open about their sexual preferences. While many Democrats saw this policy as discriminatory, it was actually implemented by one of their own, Bill Clinton, in 1994.

The original purpose of “Don’t Ask, Don’t Tell” was actually meant to protect homosexuals serving in the military, and was a relaxation of policy that had mostly barred homosexuals from military service prior.

The timeline of policy regarding homosexuals in the military has a close correlation with cultural movements surrounding homosexual rights in our country. Before WWII, homosexuals in the military were court martialed and imprisoned. In the WWII era, they were typically admitted to mental institutions and subsequently discharged, as the medical community still considered homosexuality a psychiatric condition in those days.

As you can imagine, in the 70’s and 80’s as the homosexual revolution gained momentum in the United States, many gay activists turned their sights on the military, and, as so often happens with our government, politicians slowly gave in to the pressure. Hence, “Don’t Ask, Don’t Tell” protected homosexuals from being discriminated against.

Of course, as is so common with the socially leftist agenda, that wasn’t enough for them, as they felt homosexuals serving in the military had a right to being open about their sexuality. So, in 2011, Obama reversed the policy, to the cheers of his far-left, LGBT supporters.

As you will know by now, it didn’t stop there. In 2015, Obama Defense Secretary Chuck Hagel stated that he was open to reconsidering the longstanding Pentagon ban against transgender individuals serving in the military. This came on the heels of Bradley Manning’s shocking announcement following his sentencing, and may very well have spurred the discussion.

Then, in July of 2015, it became official. Hagel’s successor, Ashton B. Carter, announced that the Pentagon would move to allow transgender people to serve openly in the military, stating that those who were already serving here being hurt by an “outdated” policy.

This shift from staunchly opposing anything but straight, masculine men in the military has of course, also come with increased integration of women in the military, notably with the recent introduction of women in combat.

Over the years, in conjunction with leftist feminism permeating the mainstream culture, women’s rights activists have continued to badger the military for basing policy on the reality of the physical differences between men and women. While the majority of feminists probably wouldn’t even consider serving in the military themselves, they certainly seem determined to make sure that as many women as possible can enter the armed forces.

Are Women Favored in the Military?

One of the most distinct ways that this has manifested itself in actual military policy is by lowering physical requirements by both men and women. An early YouTuber named Christy0Misty gained a following refuting mainstream leftist feminism and later deleted her account due to violent threats she received.One of the topics she addressed was based on her own experience in the armed services, in the Civil Air Patrol.

In her video, “Confessions of a GI Jane”, she shared how, as she gained rank during her time in the CAP, she began to discover a trend of favoritism towards women that was disenfranchising the men. One of the ways in which they were doing this was by lowering the physical requirements for women to regulations that nearly anyone could pass, while the men’s requirements remained vigorous and competitive. And when she spoke up, she was brushed off. Her confessional is worth a watch:

Robert Maginnis, a retired Army officer, agrees that standards are being lowered for the sake of pleasing a social agenda. “The pressure is on the services from the White House’s politically correct crowd vis-a-vis Obama’s Pentagon apointees,” he says, “who will force the services to accept degraded standards.”

“The pressure is on the services from the White House’s politically correct crowd vis-a-vis Obama’s Pentagon appointees, who will force the services to accept degraded standards,” said Robert Maginnis, a retired Army officer and author of the book “Deadly Consequences: How Cowards Are Pushing Women Into Combat.”

Of course, the fact that PT standards need to be lowered to accommodate female troops only stands to underscore the reality that women are irrefutably weaker physically than men. This became apparent as ambition female soldiers tried to blaze trains into the infantry and special forces after the ban on women serving in combat was lifted.

General Martin E. Dempsey, the nation’s top military official at the time the ban was lifted on women in combat, confirmed at the time that the administration would lower the standards to accommodate the incoming women. “If we do decide that a particular standard is so high that a woman couldn’t make it,” he said, “the burden is now on the service to come back and explain to the secretary, why is it that high? Does it really have to be that high?”

Lowering the standards for women would of course be the virtual only way women could advance in the infantry, ultimately, as evidenced by the first team of women who attempted to complete the rigorous testing for the Marine’s Infantry Officer Course. The IOC is a requirement for anyone who wants to be an infantry officer, and of the 29 women who attempted the course, none completed it, and only four made it through the first day.

While there are certainly many vital roles women could play in the military, serving in combat remains impractical. And yet, feminists have always continued to insist that women play a more and more prominent role in the military. This has nothing to do with national security–the ultimate purpose of the military–but with a leftist social agenda of “gender equality”. And sadly, the fact that women are clearly not physically equal to men plays no part in their logic.

It seems that men these days hardly object, too. A recent poll showed that men would actually support women being drafted, a proposal that was dropped from Congress last year. According to the poll, a striking 61% of men were in favor of implementing the draft for women. Most ironically, of course, is the fact that of female respondents to the same poll, more women than not were actually against women being drafted.

This is the sad reality of our time, I believe. While men are abandoning chivalry and sitting back to let the feminists wreak havoc on American culture, at the end of the day, women would still rather have men do their fighting for them. Whether this means that it is only a small majority of women representing all women, or that, at the end of the day, today’s feminists don’t practice what they preach, the reality is that this is one huge example of our our military is being demasculinized.

So, when it comes to social agendas, what typically comes hand-in-hand with feminism and a pro-LGBT agenda? That’s right: Islam. In perhaps the most striking and self-detrimental pressure applied to the military yet, American liberals have actually decried the lack of Muslims in the military and throw media fits whenever a Muslim isn’t allowed to wear their beard or hijab in uniform.

If you search for “Muslims in the US Military” on Google, you will be met with a slew of articles from mainstream, liberal publications like the New York Times, lamenting how few Muslims there are in the military and the difficulties those who are enlisted face, such as non-halal food, dress codes that are unfriendly to beards, and a notable lack of prayer rooms or imams serving as military chaplains.

Articles like these also never fail to point out how, between 15 years of military intervention in Muslim-majority countries and the fallout from the 9/11 attacks, Muslim soldiers face a huge stigma and, sometimes, harassment. Of course, this is pinned on those doing the harassing, and not those who identify with a religion whose adherents commonly pledge “death to America” and target US military bases and embassies abroad.

Liberals unrelentingly blame the US for Muslim terrorism, so of course the fact that Army psychiatrist Nidal Hassan went on a shooting spree in Ft. Hood, Texas in November of 2009 was no different. While to most sensible observers, the shooting in Ft. Hood would be a very good example of why we must be wary of allowing Muslims to serve in our armed forces, to liberals, it was a result of the pressure of Hassan having to listen to the psychological trials of troubled veterans all day as an Army psychiatrist. Nevermind that he asked to join the Islamic State from death row or screamed “Allahu akbar” before commencing his shooting spree.

What is possibly more insane than twisting the implications of the Ft. Hood shooting is that liberals of course think the obvious solution is to allow more Muslims to serve in the military, and to make them feel welcome. In the UK, there is even a campaign to recruit more Muslims into the armed forces, since the government was concerned that despite the high Muslim population in the UK, very few Muslims enlisted. One might think that because so few Muslims enlisted, perhaps they did not have the best interest of their host country in mind, but not liberals. In the US, every other minority group is adequately represented, and we have a strong history of patriotic immigrants joining up to serve their new home.

This is not to disparage those Muslims who do want to serve their country and condemn the violence that is committed across the world in the name of Allah. Or the women or transgender people who simply want to defend their homeland. At the end of the day, if these individuals are up to the challenge, an argument can be made to let them take it.

But that’s just it: serving in the military is a challenge. We must not let liberals, who are largely anti-military to begin with, dictate policy that should be decided by seasoned military veterans who know what it takes to protect and defend our homeland and our interests abroad. We cannot expect those who have already proven themselves up to the challenge of serving in the armed forces to have the standards lowered to protect someone else’s sense of political correctness.

The military is not a social experiment, it is an organized killing force. There is no room for feelings when it comes to security. And finally, we have a commander-in-chief who understands this.



via Modern Survival Online http://ift.tt/2voiAKp