The Spatz (German Spatz) is a small monoband CW transceiver kit designed by DK1HE and distributed in kit form by the German QRP Project. Despite the small size and relative simplicity of the kit, the Spatz is a quite advanced transceiver featuring goodies like DDS with RIT/XIT, 8 pole Cohn Filter with 400Hz bandwith, AGC with high dynamic range, heavy duty PA, built-in keyer and full QSK. The kit can be bought with DDS ready built and tested and is available for the 80, 40, 30, 20 and 17 meter bands.
Sparrow RX/TX Tests
Yesterday I finished the IF section and the TX mixer. Today I finished the last two sections, namely the TX driver and power amplifier. There were a few dificculties along the way…
Tonight I have rigged the Sparrow DDS together to see what comes out of it. First, I hooked it up to a counter and could measure a coverage from 7.995 MHz to 8.105 MHz coresponding to 100 kHz coverage on the 40 meter band.
Resuming the Sparrow
Ok, I don’t know what happened… For some reason, no sparrow progress since Oct last year. Anyway, I am back, and working on the Sparrow again!
More Sparrow Progress
Today I finished section 4 containing the VFO mixer and frequency counter read out. This is also where the ready built DDS comes into the picture.
Starting to Build The Sparrow
Today I’ll start building the Sparrow. The kit arrived by mail some 7 days after I ordered and payed for it, so I am quite satisfied with my shopping at QRP Shop so far.