Bob Liesen wrote:
On Tuesday, August 11, 2020 at 8:19:38 PM UTC-5, Bob Liesen wrote:
Hi gang,
I'm reverse engineering a simple homebrew regen rx that is missing it's single tube. It used a 7 pin miniature single triode, that much is clear, but I don't know what type.
I do know which pins are heater, grid, etc., but don't want to page through my old tube books looking for a match. I have already looked up the common guesses (6C4) etc., but no joy.
Anyone know of a sortable tube database where I can sort by grid = pin 1, heater = pins 2 and 3, etc?

Found several. They are all variations on a single triode with a double diode. Now to see if I have any.

The ubiquitous one of those was the 6AV6 used in AA5 sets. Readily available
at the supermarket for kids wanting to build radios.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."