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3C24

Sensibly equivalent to:
25T 3-25D3 B1109 CV789 HK24G PE130A VT-204
    
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The 3C24 is a small American transmitting triode. This exhibit also carries the American service code VT-204 and is also known as the HK24. A larger version exists as the HK54
Inspite of its small size it produces a considerable amount of RF power up to the low VHF region.
The anode is a bell that contains the filament and grid in a coaxial arrangement.
The wide glass tube envelope is 33 mm in diameter and, excluding the UX4 base pins, is 90 mm tall.
References: Datasheet. Type 3C24 was first introduced in 1945.

 

Pin Connections
UX4
1
2
3
4
tc
f+
-
-
f-
a

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
Pdriv
Pdiss
Pout
freq
f.max
6.3
3.0
1000
-70
72
1.3W
25W
47W
60MHz
100MHz
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 15, 2014.
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