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…
solder
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.