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X22

Sensibly equivalent to:
210PG CV1043 CV3818 VHT2A VR43
See also:
Osram Valves 'Acoustic Aberation' 1 HF Stage Advert
    
Extras ▼

 

The X22 is a battery heptode or pentagrid mixer for use in broadcast receivers including short wave bands. X22 shows the valve without the metal screening paint.
The pin connections presented come from Thrower as the reference in Radio Valve Data appears to be incorrect.
The Osram logo.
The classic envelope is 45 mm in diameter, and excluding the B7 base pins is 116 mm tall.
References: Datasheet, 1040 & 1043. Type X22 was first introduced in 1937.

 

Pin Connections
B7
1
2
3
4
5
6
7
tc
g2
g1
g3,g5
f
f
m
a
g4

 

Absolute Maximum Operating Conditions
Heptode
Vh
Ah
Va
Vs
2.0
0.15
150
70
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated November 18, 2015.
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