Testing a 500 milliwatt 160 metre AM transceiver from Bonbeach, 31km south of Melbourne. Favourable reports were received from the other side of Port Phillip (Curlewis).
Touching the transceiver's case while talking fixed the instability and distortion problem. A shorter wire to the fence and or an earth stake would likely have been a better fix.
The receiver is a ordinary AM radio tweaked for 160m. The transmitter is a 2-transistor crystal controlled on 1843 kHz. PA is VN10KM FET. Modulator is transformerless using LM386 audio amp - ie similar to the Poppet http://www.lightandcolours.com/m0dad/construcion/poppet_top_band_am_transmitt...
very good!!!!!!!
73,
Taka JA8JPO
TAC19jm 1 year ago
@G1DRP 500mW carrier
vk3ye 1 year ago
nice awesome man circuit please XD
renekenshin6573 1 year ago
I really like the transceiver. Nice job - good video. You are having way too much fun :).
Tom, ak2b
raccoonnyc 2 years ago