On May 25, 2006, at 9:25 PM, Jim Kearman wrote:
>> You've got some problems. First of all, the tube is good for 2 KV
>> DC and
>> pushing it to 2.6 KV would not be recommended.
>
> FWIW, both Alpha and Ten-Tec amps run the 4CX800A at >2000 V. In
> both cases I believe the loaded Ep is ~2700 V. The Peter Dahl
> replacement transformer for the Alpha 87A has a 2050-Vac secondary,
> which should provide ~2900 Vdc unloaded. The Svetlana datasheet for
> the 4CX800A gives a maximum plate voltage of 2500.
Cathode back-bombardment with SSB is different from AØ since the duty-
cycle is about 6x less with SSB.
>
> 73,
>
> Jim, KR1S
> http://kr1s.kearman.com/
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>
R L MEASURES, AG6K. 805-386-3734
r@somis.org
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