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1636

 
See also:
Valves for Single Sideband
    
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The 1636 is a UHF balanced mixer described as a beam deflection mixer. It was developed during WWII probably for Radar receivers.
The later 7360 beam deflection mixer looks to be descended from the research that generated the 1636.
Sadly this rare valve has had one of the deflection electrodes bent and this has cracked the seal and ruined the vacuum.
The RCA brand name.
The single stage electron multiplier stage dynode connection at the top and the deflection electrode connections at the side.
The outer can obscures the internal structure but there are diagrams within the attached PDF.
The deflection electrode connections. The crack is to the right connection.
The heater can be seen at the base and runs horizontally.
The wide glass tube envelope is 34 mm in diameter, and excluding the IO base pins is 106 mm tall.
Reference: Datasheet. Type 1636 was first introduced in 1943.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
h
g2,g3,g4
ic
g2,g3,g4
g1
g2,g3,g4
k
h
Dynode

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
6.3
0.3
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 13, 2019.
shape:wide.glass.tube construction:glass.foot age:1940.1950 base:io heater:6.3v pins:8 pin:1.h pin:2.g2.g3.g4 pin:3.ic pin:4.g2.g3.g4 pin:5.g1 pin:6.g2.g3.g4 pin:7.k pin:8.h pin:tc.dynode
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