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P2

Sensibly equivalent to:
CV1246
    
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The Marconi P2 is an battery audio output triode with a two Volt filament made by M-OV.
The Marconi brand is proclaimed via the paper label. The M-OV manufacture is clear from the style of the Type designation in the white ellipse.
The filament is a pair of inverted Vs.
A closer view of the electrodes.
The classic envelope is 41 mm in diameter, and excluding the B4 base pins is 84 mm tall.
References: Datasheet & 1043. Type P2 was first introduced in 1930.

 

Pin Connections
B4
1
2
3
4
a
g1
f
f

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
rl
Pout
2.0
0.2
150
-10.5
19.0
2,150
3.5
4,500
0.3W
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December16, 2016.
shape:classic construction:pinch type:triode age:1930.1940 base:b4 heater:2.0v pins:4 pin:1.a pin:2.g1 pin:3.f pin:4.f
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