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1H5GT

Sensibly equivalent to:
CV1820 DAC32
See also:
Sylvania 1H5GT Box
    
Extras ▼

 

The 1H5GT is a dry battery diode triode for receiver use. The 1LH4 is the same valve but on a B8B base. In a TRF receiver the diode would provide AM signal demodulation and the high μ triode would be the first audio voltage amplifier.
The triode is at the top and the grid wire passes to the top cap. Below is the diode that shares the same cathode tube.
The support passing up outside the anode holds the filament top spring.
The wide glass tube envelope is 29 mm in diameter, and excluding the IO base pins is 70 mm tall.
References: Datasheet, 1040 & 1043. Type 1H5GT was first introduced in 1940.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
-
f
a
-
a(d)
-
f
-
g1

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
μ
1.4
0.05
90
0
0.15
0.24M
0.275
65
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 27, 2013.
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