DIY Kit Forty-9er 7.023MHz Short Wave Ham Radio Telegraph Transceiver 3W
10,59 €
Transceiver Distance: 100-300 km. Transmit power: 3W @ 12V. 2, increasing the side tone circuit, so that when you operate the transmitter, the headset can also listen to the keying signal, side tone circuit using an audio sine wave generator, the effect was significantly better than the ordinary sense of hearing frogs square wave generator.
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