This is a modification of HF Signals' uBITX V5 amateur radio transceiver. It incorporates an "I/O Processor" (IOP), consisting of a Teensy 3.2 and associated Audio Shield, to provide additional computing power, I/O, and Digital Signal Processing.
Raduino. It was intended to be more extensive, but I had to roll some
of it back. Mostly just sharing of enums/types currently.
Currently in "factory calibration" mode. Comms (CAT) in normal mode
needs to be re-checked.
Added two tone test mode, with two new modes available via Raduino menu:
TTL and TTU.
Using test mode, I'm thinking that the proper TX output calibration,
assuming a full-scale 700/1900 test tone, is either:
0.061 (which I believe gives a 25 mV RMS output), or
~0.100 (which is just before the audio starts to distort, in terms of
visible harmonics in the spectrum at the 45 MHz IF.
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