![]() The ‘phones are inserted between the pin and the grounded side of the coil. Dumont, 418 Middle Highway, Barrington, R. The razor blade and safety-pin detector is described as follows: A station was found by moving the point of the safety pin, anchored at the other end, over the opposite end of the blade from where it is connected to the coil and antenna. ![]() Looking at several schematics, some authors have the diode pointing towards the coil while others have it pointing out to the earphones. RADIOS AND SUPPLIES REVISED Plans 18 long distance crystal sets. I can try to get a picture of the set-up as soon as I go to my friend's house again where he has all the wires and breadboard I can use. I would like to change the resonant frequency in the "tank" with a variable capacitor but when I insert a capacitor in parallel with the coil no signal comes through the speakers or headphones! I've looked at many schematics and pictures of these radios with the same set-up so I don't know what I am doing wrong. I never enjoyed listening to crappy pop music so much. Luckily with 95 turns on my first try I got Radio Disney! That's AM 1310 here in San Francisco. So far I just have a coil made from the wires inside a telephone cord wrapped around a toilet-paper-roll tube, an antenna (also a telephone wire), and an IN4002 diode that my friend gave me (I bought a zener diode, whoops). Previous topic Next topic : Author Message bcarusella Post subject: Foxhole Radio - 1 last appeal & Ill never mention it again Posted: Apr 1:59 pm. Foxhole Radio - 1 last appeal & Ill never mention it again. These were made with materials that they could get their hands on and were small enough to carry around in a big pocket. ![]() I am building my first circuit (outside of class) and am having trouble tuning my radio. Antique Radio Forums Index » Category » Antique Radio Discussions. January 21st, 2011 During World War II, GIs in the field built really amazing simple radios to listen too. ![]() Hello everyone, this is my first post here. ![]()
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