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FC13C

Sensibly equivalent to:
13PGA 15D1 CV2956 VO13
    
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The FC13C is an octode frequency changer. It was made in two versions, the FC13 on a Ct8 base and this version on a B7 base.
In use the local oscillator would be formed between the cathode and rods in the g2 position. Two screen grids are present at g3 and g5 with a suppressor grid as g6. The signal being added at g4, the top cap.
This valve is marked as Made in Holland - Philips. Our other FC13C has a slimmer envelope.
The reverse is plain metal paint - coloured gold.
The B7 base pins show no sign of use.
The classic envelope is 48 mm in diameter and, excluding the B7 base pins, is 117 mm tall.
References: Datasheet & 1043. Type FC13C was first introduced in 1935.

 

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
ra
gm
13.0
0.2
200
70
-1.5
1.6
3.8
2M
0.6
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 11, 2018.
shape:classic construction:pinch type:octode age:1930.1940 base:b7 heater:200ma pins:7 pin:1.g2 pin:2.g1 pin:3.g3.g5 pin:4.h pin:5.h pin:6.m.k pin:7.a pin:tc.g4
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