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CV2214

Sensibly equivalent to:
3B/240M
    
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The CV2214 has the 3B/240M as its direct commercial equivalent and is a small VHF transmitting triode. The drive required for full output is 2.5 Watts and the maximum grid current is 35 mA. This suggests the design use is class C and so would be used for AM and CW transmitters. Probably man-pack or vehicle based.
The use of multiple grid and cathode connections is to reduce capacitances and thus achieve the 200 MHz frequency.
The KB/F identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the F identifies the maker as STC, Paignton.
The wide glass tube envelope is 27 mm in diameter and, excluding the B8B base pins, is 62 mm tall.
References: Data-sheet & 1040.

 

Pin Connections
B8B
1
2
3
4
5
6
7
8
tc
h
k
g1
g1
g1
g1
k
h
a

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
Pdiss
Pout
freq
6.3
1.1
300
-10.0
90
15W
16W
200 MHz
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 28, 2024.
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