[ARC5] 6AC7 and 6AB7

[Kenneth G. Gordon]

On 8 Feb 2013 at 4:33, Mike Everette wrote:

> Not sure if I recall any articles about the 6AC7 in a VFO.  Are you
> possibly confusing it with the 6AG7?  That was a very popular
> oscillator tube and worked great in a VFO.  I built a couple with
> 6AG7s, so can testify to it.

Yes, the 6AG7 is a very excellent oscillator tube, and was used in many, 
many oscillators, both crystal and VFO.

But, yes, I have in my collection of old ARRL handbooks several articles 
detailing VFOs built with the 6AC7, and also with the 6SK7, as Carl 
mentions.

The 802 was also popular and the 837 was used by the Navy as a very good 
VFO tube.

Ken W7EKB