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|14th December 2003, 12:29 PM||#1|
Join Date: Nov 2003
Location: South Sweden
What is PTT216?
I have this tube in my pile of NOS tubes.
It's made by CSF France, is a penthode, 9 pin short
Box marked P.T.T. 216
Does anyone of you know what it is? It's one of 2 tubes I have and know nothing about.
|14th December 2003, 01:36 PM||#2|
diyAudio Senior Member
Join Date: Aug 2002
The PTT 216 is one of the many types developped for the postal services.
Vf 6.3V 0.3A
Rg1 Max 50KOhm
Pg2 Max 0.75W
Pa Max 2.25W
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