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VR106

Sensibly equivalent to:
12VPA 9D2 ARP3 CV1106 CV1321
    
Extras ▼

 

The VR106 is a variable μ RF pentode supplied to the RAF before the CV system was introduced. The CV number for the VR106 is CV1106 and the commercial equivalent is the 9D2. This example has the old stores code of 10E/11095 on the identification label as well as the up arrow denoting the RAF.
The 200 mA heater requirement indicates that this valve is suitable for series heater chain use.
The outer perforated screen and the lower screen obscure most of the construction details.
The classic envelope is 38 mm in diameter, and excluding the B7 base pins is 97 mm tall.
References: Data-sheet & 1043. Type VR106 was first introduced in 1934. See also 1934 adverts.

 

Pin Connections
B7
1
2
3
4
5
6
7
tc
nc
a
g3
h
h
k
g2
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
μ
13
0.2
250
125
-1
10.0
3.5
0.6M
1.65
1,000
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 24, 2022.
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