Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 35435
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Tube type:  Transmitting Tetrode, air cooled 
Identical to 701A = CV677
Successor Tubes 715A   426XQ  

Base TRANSMITTING & Power-TUBES/VALVES in gen Top contact with a cap.
Was used by Radar
Filament Vf 8 Volts / If 7.5 Ampere / Indirect

Power tetrode intended as radar modulator to drive the 700A to D magnetron family. Glass bulb, reduced height WE 357A, containing four electrode sets of 350A, with common molibdenum anode; gold plated control and screen grids. Four pin base. 12.5KV, 10A pulse, 100W average plate power.

Two 701As in parallel were used to generate 12 ampere pulses at 10 kV, 4 µs wide, 1600 pps

Information source Tube Lore (I)   
-- Original-techn. papers.   BSTJ

701A: Bell System Technical journal october 1947
Patrice Zeissloff

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