This design is a couple of years old and evolved from Chirpy. Unlike the original design, chirp on 10m is negligible. This design really works and gives credible results on 10m with just a handful of parts. Sensitivity could be better with a few more parts, but not this simple!See https://sites.google.com/site/g3xbmqrp3/hf/chirpy .
2 comments:
I have asembled mine and works fine.
Almost made my first cw contact whit it but the qrm was a lot and the american did not confirm. This is one project i will never forget is fun and simplicity to build.
http://www.qsl.net/ct5jzx/page7.html
Pedro Almeida
CT5JZX
Thanks Pedro. It certainly is a lot of fun and readily lends itself to experimentation and further improvements.
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