On 26 May 2006 at 4:25, 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.
I have run a 4cx800a at 2500 volts (and 350v on the screen) for 10
years with no problems.
73,
George T. Daughters, K6GT
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