Wednesday, July 20, 2011

ARRL Homebrew Challenge 3 radio update: AGC and signal meter circuitry complete

I've completed the AGC and signal meter circuit. My signal meter displays absolute signal level in volts at 50 ohms. The AGC circuit uses 4 op-amps and is audio derived. I've had good luck with audio derived AGC circuits in the past so i plan to use one again this time.