On 5 Feb 2013 at 20:40, Sandy wrote: > From what you are describing, it should be a very excellent "VFO" oscillator > then? Never thought to try one like that! > 73, > Sandy W5TVW There were several articles in old QSTs, some of which ended up in old ARRL Hancbooks, which detailed VFOs built using 6AC7s. Ken W7EKB