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AC/OC4

 
See also:
Frequency Changing - Radio Record AC/OC4 Box
    
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The AC/OC4 is an octode frequency changer or mixer. It has a 4.0 Volt AC heater. The oscillator anode would be operated at 90 Volts. The Mullard FC4 is very similar in rating.
The reverse is plain zinc paint with a reference code near the base.
The classic envelope is 46 mm in diameter, and excluding the B7 base pins is 113 mm tall.
Reference: 1043.

 

Pin Connections
B7
1
2
3
4
5
6
7
tc
g2
g1
g3,g5
h
h
m,k
a
g4

 

Absolute Maximum Operating Conditions
Octode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
4.0
0.65
250
70
-1.5
-
-
0.7
Updated March 19, 2014.
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