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#1
04-13-2018, 12:21 PM
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So attached is what I drew..looks like a single amp.
What I reference c1 looks like a resistor may be just open.cap checker did give 1nf. anyway color code on It white red black brown silver on a brown body.. I assume if values of c1. C2 are correct its a high freq amp. I agree with the 11pin being just a connector. I do appreciate the reply. Most of these modules are 7 pin others 9 pin tube sockets on top all 11 pin on bottom. 
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#2
05-02-2018, 10:42 AM
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About the only tubes that used the 11 pin base were photomultipliers like the 931A type used in the B&K TV analysts. They were pretty common on industrial relays, allowing 3 SPDT contact sets, and 2 pins for the coil.
The 11 Pin plug/socket were also pretty commonly used for connecting external power supply units to vintage ham transceivers. Like the HP-23 supplies used with the Heathkit SB-line. Last edited by N2IXK; 05-02-2018 at 10:45 AM.
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