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ECH11

 
    
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The ECH11 is a triode hexode frequency changer for use in a superhet receiver.
We have the complete line-up of valves from the set this valve was used in. Frequency changer ECH11, IF amplifier EF11 x 2, demodulator, AGC detector and first audio stage EBC11, push-pull audio output EDD11 and rectifier EZ11.
The sides are painted plain black.
The wide metal tube envelope is 36 mm in diameter, and excluding the footless base pins is 42 mm tall.
Reference: Datasheet. Type ECH11 was first introduced in 1939.

 

Pin Connections
Footless
1
2
3
4
5
6
7
8
g2,g4
g1
k,m
a
h
h
g3,g1(t)
a(t)

 

Absolute Maximum Operating Conditions
Hexode
Vh
Ah
Va
mAa
6.3
0.2
250
2.2
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated September 10, 2013.
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