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PM2HL

Sensibly equivalent to:
210HL CV1050 HL2K VT50
    
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The PM2HL battery triode was designed for detector service in broadcast receivers. The two volt filament was for operation from an accumulator, which is typical of radio valves from the 1930s
The classic envelope is 32 mm in diameter and, excluding the B4 base pins, is 82 mm tall.
References: Datasheet & 1043. Type PM2HL was first introduced in 1938.

 

Pin Connections
B4
1
2
3
4
a
g1
f
f

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
2.0
0.1
135
-1.5
2.2
21,500
1.4
Thanks to Andy Cowley for supplying the above PDF datasheet.
Updated January 08, 2013.
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