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1S5
The 1S5 is a miniature tube consisting of a diode and a sharp-cutoff pentode, developed for use as a combined detector and AF amplifier in battery-powered portable devices. Pinout as seen from the bottom of the valve.

 1S5 datasheet

Pinout as seen from the bottom of the valve

1S5 on this website
GPO interference investigation receiver WT No. 11
RBZ receiver (WWII)
RBZ
Polish OP-3 (Type 30/1) WW-II clandestine receiver
Spanish valve-based bug 'BICHO' from 1953
Equivalents
  • CV784
  • DAF91
  • 1FD9
  • ZD17
Further information
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© Crypto Museum. Created: Monday 10 May 2021. Last changed: Monday, 10 May 2021 - 06:23 CET.
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