Македонски форум за електроника
Аналогна електроника => Радио техника => Предаватели => Topic started by: DX-er on 11.03.2011, Friday, 21:00:31
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Am Transmitter (http://www.youtube.com/watch?v=6Oj5BjxhsVE#)
This transmitter works pretty good if you use it as AM Modulator for an old Radio or just becasue u like AM. If you want to add an Antenna to it (Then it may broadcast 10-15 meters with a 6 foot long wire as antenna) you need to connect a harmonic filter to the output thats really important. It has been designed as modulator so in the final circuit I´d suggest to connect a 1mH Coil (that looks like the blue one on the circuit) from the hf out to ground. That will give you a range of 1m or so, and barely no "transmitted" harmonics.