Tap/Knock code communication

I saw this on the net today and I think it’s a great idea. Personally I use Morse code, But this limits me in two ways. 1. I need a electronic medium to transmit over great distances. 2. The person receiving the message needs to know Morse code. With his you could easily use a light or any noise maker. Here is the Wikipedia page on it. https://en.wikipedia.org/wiki/Tap_code Here is…

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Baofeng Radio TNC Packet Radio cable

  I hade to make the Baofeng radio to TNC /Sound Card cable because the Baofeng is designed to key up the radio when the Grounds of the Speaker and microphone are shorted. This presented a problem when using a USB sound card for a interface. the universal ground what shorting the two leads. so we need to make a ground loop isolator and set the radio to VOX. not…

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Homebrew Temporary lightning arrestor

    In the past I have just used spark plugs too. How it works: Once the air has ionized, it becomes a conductor. And the dielectric breakdown of the air makes it a conductor and will pass the static charge/lightning strike to ground. Its kind of a one shot deal and it’s better than nothing. Its mostly for the static build up on the wire in the storm. Sharpened…

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How to Solder copper wire to aluminum foil.

How to Solder copper wire to aluminum foil. I will be making some disposable variable capacitors later today for some magnetic loop antennas. This is also a useful technique to solder copper braid to an antenna. I think you can use any oil. the important thing to remember is keeping Oxygen form the foil. You don’t want it to oxidize before you get the solder down.

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SHTF Survivalist Radio Frequency Lists

I have seen a lost of copies of a list like this over the years. However I think this is the best one with all the other channels. I want to make a personal note here: Its important to get your ham license before the S.H.T.F. ¬†Its very unlikely you will be able to use ham equipment with out the proper knowledge or experience to deal with RFI or Propagation….

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