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I now tried to make it on perfboard for the second time - and for the second time it is not working. My build uses exactly the parts given in the instruction and my antenna is 11" long. When I tune my bug, I sometimes get a loud acoustic feedback, but when testing it with music it does not transmit anything. Could the reason be the slightly overlength antenna? All I was able to transmit until now were load noises when tapping on the microphone but no speech, no music etc.
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