07-10-2016, 10:08 PM
The other valves in the American series for operation on 12volt HT were the 12AC6, 12AD6 and 12AE6.
http://www.radiomuseum.org/tubes/tube_12ac6.html
http://www.radiomuseum.org/tubes/tube_12ad6.html
http://www.radiomuseum.org/tubes/tube_12ae6.html
It could be possible that the 12AD6 is a development of the 6BE6/12BE6 just like it is suggested that the ECH83 is a specially selected ECH81.
Geordie McBoyne.
http://www.radiomuseum.org/tubes/tube_12ac6.html
http://www.radiomuseum.org/tubes/tube_12ad6.html
http://www.radiomuseum.org/tubes/tube_12ae6.html
It could be possible that the 12AD6 is a development of the 6BE6/12BE6 just like it is suggested that the ECH83 is a specially selected ECH81.
Geordie McBoyne.







