Your meter calibration is probably off that far unless you have a very
good one.
73
Gary K4FMX
Dennis Sokol wrote:
> I have a BTI LK-2000 using a 3-1000Z operating on 160. I can get 1250 watts
> out with 2700 volts and 750 ma key down. The tube seems to be limited in
> current draw. I have seen more power out at a different QTH with higher line
> voltage.
>
> I have measured the filament voltage at full load to be 7.08 volts.
> This is a bit low from the spec of 7.13 to 7.87 volts. Is the low filament
> voltage a possible cause of reduced power out?
>
> There is a 208 volt tap on the filament xformer but I would have to put in a
> dropping resistor in the primary to bring the voltage down to 7.5 volts. Is
> it worth the effort? Am I hurting the tube with the lower filament voltage or
> am I extending the life?
>
> Thanks and 73,
> Dennis W0JX Milan, OH
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>
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