Dr. CockroachJuly 5, 2023
Here is a receiver that I decided to build just this week after I had first used this same circuit years ago. It is about as simple as you can get and still receive decent CW on either the 80M or 40M bands. If SW AM stations bleed in then using T50-2 toroids for the coils increases the Q and helps a lot.
A AM shortwave broadcast from Radio Havana was getting past the tuner at night so I added a simple wave trap to the antenna line. So far so good. Next will be a audio filter to narrow the audio bandwidth a bit to make listening to CW easier when a lot of signals are close to each other.
The circuit is from the following site and I highly recommend giving it a try. https://www.qsl.net/kc6wdk/QRP/
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Hey there and thanks. I have not had a active Ham Radio station for several years and decided to get back into the game but at its most basic roots. Being this receiver is made up of parts from my junk box, it is a free build and works fairly well for what it is. I'll add a post for the single transistor transmitter soon :-D
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Hey Doc, that's awesome !!!
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