All ham frequencies 160 through 10 meters including WARC bands. We stock all 10 meters segments 28.0 through 30.0 Mhz. We are interested in customer feedback on stocking other frequencies such as 15 MHz, popular shortwave segments, CB, etc. Includes full size fold out schematic. In addition, two more AGC positions are provided to better optimize AGC speed to varying conditions and modes.
New ones are no longer available.
Replace the two electrolytic cans with our four individual filter capacitors on a PC board. Requires removing the two can-type capacitors, and installing our board in its place. Also includes a fifth capacitor for the 150 V. DC supply modification. The AMP-4 replacement audio amplifier eliminates these problems. While intended as an R-4C retrofit, this circuit performs so well that we recommend it for other communications uses.