Merangkumi semua pengetahuan radio amatir seperti teknikal antenna, transceiver, CW, digital, APRS, emergency communication, contest, echolink, microwave dan lain-lain. Sila ke http://belajar.internetsehat.org/pustaka/cd-orari/

By 9M2PJU

An amateur radio operator, Royal Signals veteran, jack of all trades and master of none.

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