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H30

Sensibly equivalent to:
CV2979
See also:
Acoustic Aberration Advert
    
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The H30 is a high-μ triode with a 300 mA heater. The heater at 13 Volts and 300 mA was designed for use in Ac/DC receivers or from 12 Volt vehicle batteries.
It was designed for low microphany. The L30 is the low impedance version and has the same heater requirements.
The Marconi name on the reverse.
Thanks to Mark from Vintage-parts for sending these images.
The classic envelope is  mm in diameter, and excluding the B7 base pins is  mm tall.
References: Datasheet, & 1043. Type H30 was first introduced in 1934.

 

Pin Connections
B7
1
2
3
4
5
6
7
tc
m
-
-
h
h
k
a
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vg
mAa
ra
gm
μ
13.0
0.3
250
-1.7
5.5
13,300
6.0
80
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 27, 2017.
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