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ACT9

Sensibly equivalent to:
CV28
See also:
CV0028 short entry
    
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The ACT9 is a directly heated triode transmitting valve. The Air Cooled Triode 9 was effective for RF transmitter and RF heating service into the low HF bands. The M-OV series of ACT air cooled triodes features the external copper anodes of the CAT series but with cooling fins rather than a water cooling jacket.
The picture shows the copper anode with and without the cooling fins. In use air would be forced over the anode fins.
See also ACT9.
The wide glass tube envelope is 61 mm in diameter and the overall length is 425 mm. The cooling fin assembly is 155 mm in diameter and 185 mm long.
References: Datasheet & 1005.

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
mAa
gm
μ
16
22
10,000
2,000
4.0
40
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 05, 2015.
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