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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: Data-sheet & 1043. Type FC13C was first introduced in 1935. See also 1935 adverts.

 

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
PDF scanned from an original document held by the museum
Updated August 01, 2019.
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