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EK2

Sensibly equivalent to:
CV1426
See also:
The Latest Octode Frequency Changers
    
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The EK2 is an octode frequency changer. The Philips Ct8 base proved unpopular with UK manufacturers and Mullard replaced this valve with the EK32. This is identical to the EK2 but on an IO base. The differences are in anode voltage and current.
The octode has a single electron stream for both oscillator and mixer. The signal would be coupled into the valve via g4 on the top cap.
The classic envelope is 29 mm in diameter and, excluding the Ct8 base pins, is 82 mm tall.
References: Datasheet, 1040 & 1043. Type EK2 was first introduced in 1938.

 

Pin Connections
Ct8
1
2
3
4
5
6
7
8
tc
m
h
h
k
g2
g1
g3,g5
a
g4

 

Absolute Maximum Operating Conditions
Octode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.3
200
50
-2
2.5
0.8
2M
0.55
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated August 11, 2015.
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