Simple 1308kHz Amplitude Modulator PCB Testing

This is a very simple 1308kHz Amplitude Modulator Board, to listen oldies with vintage tube radios that do not equip AUX input. One transistor C1815 and one crystal oscillator 1308kHz are on the board. Originally this PCB requires 3-5m antenna wire but in this test I removed, cause the receiver was very close. Power consumption is small, 20mA or around. The making up detail was published in my article, DENSHI KOSAKU MAGAZINE No.5 2009.

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