> In Field Day use, with more than one station hooked up to
> the same
> generator, there can be violent swings in the line voltage
> as stations
> switch unpredictably between transmit and receive. A
> regulated
> filament/heater supply could prevent damage due to
> insufficient cathode
> temperature.
The cool down time is about the same as the warm up time
Ian, momentary sags wouldn't hurt a thing. Personally, I'd
use a constant voltage transformer if it was that big of a
deal. If I used a switcher or a current regulated/limited
supply, I'd extend the warm up time to be safe if the
filament supply was current limited.
73 Tom
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