Wednesday, October 06, 2010

VHF FM transmiter... On air tests

YES! It works! In fact this is my first second transceiver ever built (the Pixie was the first)! The others or aren't finished or are separated units!

The crappy photo and the lousy video:


video

There's no image in the video since it's difficult to hold the camera while talking to the mic some 2m away! The sound comes from the TM-D700 with the antenna about 3m away from the vfo buffer and output amplifier disconnected.

Now, there's still some improvement to do on the tone encoder, the final amp and connect the rx/tx circuit. The tx vfo is some 40Khz offside from display frequency but I think that's because the PLL crystal is not trimmed to frequency yet.

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