Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 27706
Tube type:  TR-switch   SHF/EHF (>3 GHz) 
Identical to CV43

Was used by Military and/or Government

This was the first S-band TR switch, 50KW peak, derived from the body of the NR89 klystron. Using the same resonating cavity and the roughly same structure, the body was filled with few millimetres of water vapour and a radioactive activating compound painted inside the glass. Referred to as 'Soft Sutton tube' or 'Soft Rhumbatron', in the late 1942 its filling atmosphere was changed to a mixture of water vapour and argon, 6 mm Hg each. The resonating cavity or Rhumbatron was surrounded by a constant temperature jacket.
Used in H2S and ASV radar sets.
Design details were sent to USA since late 1941.

Information source -- Original-techn. papers.   Callick, Metres to Microwaves

Emilio Ciardiello
    More ...
CV43: Manufacturer's Literature
Emilio Ciardiello

More ...

Collection of



You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]

Data Compliance More Information