It is just very cool to see someone build a superhet and get it to work. For so many years amateurs were told that "homebrew receivers are too hard." Even simple regens or direct conversion rigs were sometimes seen as beyond the abilities of amateurs. But here we see another reminder of this not being true. Even a superhet -- which is a lot more difficult than a direct conversion receiver -- can be homebrewed by an amateur builder. Three cheers for Pil Joo!
He wrote on the SolderSmoke Facebook page:
I finished my first super het receiver. It's for the 40m band. It consists of: bandpass filter, tuned amp, diode ring mixer, wide band amp, crystal ladder filter, wide band amp, then SA602 + LM386 combo. I learned tons as i put all the components. First two amps are my design. The third amp is bga2866. The bandpass filter is what i posted a few days ago. I planned to make another one but with 2.5db insertion loss i thought it was good enough.
The result is actually quite good. I can hear everything a local kiwisdr can hear. Now, I have lots of ideas about how i can improve, but that will be another radio.
Pil Joo
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