> Question: Do you have to wait three minutes from the time the
> filament voltage is turned on until the HV is applied?
>
> 73,
> Mike, K4GMH
The Alpha 77DX/SX and others bring up the HV when the a.c. mains switch is
activated. The timers are on the PTT line. Other manufacturers go to a lot
of extra expense and circuitry to withhold the HV for the timer to complete
its cycle. I prefer the Alpha approach. Frank, W3LPL, is the expert on this;
his big contest station once ran several single-band amps with a common
power supply. To be sure, why not contact the engineering dept. of your tube
manufacturer for guidance?
(((73)))
Phil Clements, K5PC
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