Click for homepage
1T4
The 1T4 is a miniature screened pentode for use in battery-powered devices. It has a B7G base and was introduced around 1940. Pinout as seen from the bottom of the valve.

 1T4 datasheet

Pinout as seen from the bottom of the valve

1T4 on this website
GPO interference investigation receiver WT No. 11
The UK Type 36/1 (MCR-1)
Norwegian Receiver Type 31/1 (Sweetheart)
Polish OP-3 (Type 30/1) WW-II clandestine receiver
First hand-held two-way radio
RBZ receiver (WWII)
RBZ
Belgian post-war version of the UK Type 36/1 (MCR-1), made by MBLE (Philips)
RS-1 (AN/GRC109)
Portable radio direction finder (US, 1942)
RZ-301 Pospisil (CZ)
Equivalents
  • 1F3
  • CV785
  • DF91
  • VT-173
  • W17
Further information
Any links shown in red are currently unavailable. If you like the information on this website, why not make a donation?
© Crypto Museum. Created: Sunday 01 January 2023. Last changed: Sunday, 01 January 2023 - 11:53 CET.
Click for homepage