The article i was referring to is page 96 of 73 Magazine, March 1970, a surplus special issue. It has a schematic of the SSQ-23, whose RF section is only 2 tubes, 12AT7 and 6BQ7. The article sez you can retune it to 2 meters and come up on a repeater. Free running oscillator, so good luck! -Hue K7HUE