Raspberry pi plus 2 wifi cards...
Sunday, July 12, 2015
Father's Day present was a 20m hf radio kit.
And now the housing hardware is on order and I am starting to design a tuner for the device...
Proceeding to box it up after the hardware arrived...
It's not easy to cut square holes with a Dremel.
But the power up test blows fuses. That's odd. After digging around my irf510 power fet has essentially zero resistance between drain and body and I had grounded it to the frame..
Insulating washers and now the calibration process...
Now to wait for a microphone to be delivered...
Well apparently also replacing the irf510 that didn't like being shorted to the case.
Aligned and finished. 5 watts of power.
Tuesday, April 14, 2015
A few discrete components
And a radio and poof, an Aprs tracker
Then a ferrite choke for reflected rf
Adjustment of the signal
A better antenna
And... Off to the races
Everything is on github..