I made a boo, boo and destroyed the Nanocomputer on the first DDS I built - wired up the Rotary Encoder wrong way round! Thus shorting out the +5V supply! But I have rebuilt it now. And this is what I have now, not finished, but the Transceiver is complete, and the DDS is working, but not yet the /4 74AC74 Johnson counter...
The Transceiver
The DDS, 74AC74 in place but not wired yet
The display, and software which drives the DDS
The QRP TCVR is expected to have all of 50mW output! and will need a decent PA to use it on the 40, 30 & 20m bands.
Sunday 22 April 2018
Progress - QRP SDR Transceiver
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