![From the "pro" magazines: LM386 regen, IEEE Spectrum on ham radio, measure resonator Q factor - KB6NU's Ham Radio Blog From the "pro" magazines: LM386 regen, IEEE Spectrum on ham radio, measure resonator Q factor - KB6NU's Ham Radio Blog](https://www.kb6nu.com/wp-content/uploads/2020/06/lm386-regen.png)
From the "pro" magazines: LM386 regen, IEEE Spectrum on ham radio, measure resonator Q factor - KB6NU's Ham Radio Blog
ARRL The National Association for Amateur Radio - “Homebrew” is referred to in ham radio as designing and building your own equipment. Pictured is a receiver for 40 meters, by Lou Burke,
![HAM RADIO homebrew gear - The "Hiss-a-nator" CW audio filter - get rid of high freq audio amp hiss - YouTube HAM RADIO homebrew gear - The "Hiss-a-nator" CW audio filter - get rid of high freq audio amp hiss - YouTube](https://i.ytimg.com/vi/B3RNveZ7R0o/maxresdefault.jpg)