04-26-2013, 10:56 AM
Oh! Ron, I may know what Brenda is talking about!
There IS a metal 6A7. But it is a Russian pentagrid tube, and is NOT pin-compatible with American 6A7.
This may confuse some falks - they are sold same way, as 6A7 on auctions.
It has that characteristic "ruffling" on top.
http://www.radiomuseum.org/tubes/tube_6a7~2.html
There IS a metal 6A7. But it is a Russian pentagrid tube, and is NOT pin-compatible with American 6A7.
This may confuse some falks - they are sold same way, as 6A7 on auctions.
It has that characteristic "ruffling" on top.
http://www.radiomuseum.org/tubes/tube_6a7~2.html