Re: 80m AM / SSB Receiver from a scrap VEF10
Finally it ended up finished... Made a few mods - added an RF amp and RF gain, stablized the BFO and OSC with 5V regulators, screened the product detector and BFO, changed the way the mixer works slightly added a meter for signal strength and a simple RC bandpass filter for 300Hz - 4KHz just before the auidio amp.
The receiver is incredibly sensitive, and although there is the option to connect an external antenna the telescopic one does just fine on it's own.
Really had a lot of fun with this!
Peter
|