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4074A

Sensibly equivalent to:
2C34 CV18 CV1061 DET19 RK34 TV03-10 VT-224 VT61 VT61
See also:
CV1061 short entry
    
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The 4074A is a low power VHF transmitting double triode that would have been used in push pull with a common tuned anode coil connected across the twin top caps. The HT would be fed into the tank circuit centre tap. The base is ceramic for better resistance to heat.
The classic envelope is 42 mm in diameter and, excluding the UX7 base pins, is 111 mm tall.
References: Datasheet.

 

Pin Connections
UX7
1
2
3
4
5
6
7
tc
tc
h
-
g1(1)
k
g1(2)
-
h
a(1)
a(2)

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
Pdriv
Pdiss
Pout
freq
f.max
6.3
0.8
300
-50
90
1W
10W
15W
100MHz
300MHz
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 03, 2015.
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