![]() ![]() It should be tapped at 1/2 turn from the ground side for connecting the antenna, and tapped 2 turns from top of coil for connecting the diode. 16 magnet wire wound on a 3/4 -inch diameter coil former, 1/2 inch long. Smallest One Transistor FM Radio Receiver Circuit Parts List The upside being that the design can also used as a walkie talkie within a small radial distance.more on this next time. Remember, the circuit also acts a like an effective transmitter circuit, therefore keeping the antenna size bigger would mean transmitting noise across the ether and disturbing your neighbors radio reception. The antenna in the proposed single transistor FM radio receiver circuit is not crucial and in fact should be kept as small as possible, a 10cm wire would be just enough. ![]() This is important to keep the circuit stable and avoid drifting away of the received stations and also for cancelling unwanted noise.As indicated at the beginning of the article, the circuit should be installed over a wide circular meta plate, preferably a solderable material, and all the ground of the circuit soldered on this plate. ![]()
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