[Elecraft] KPA500 Voltage range?
Andy Durbin
a.durbin at msn.com
Wed Jul 6 15:57:39 EDT 2022
"I though Elecraft wanted HV to be kept at or above 60 to avoid unacceptable IMD. No sure where I found that but don't think I imagined it. "
The problem with making measurements is that one may not like the results. It's a nice warm afternoon here in Glendale AZ and I expect every air conditioner in the street is running. Line voltage is down to 116.4 and loaded HV is well below 60 now.
1:13:59.663 KPA Mon frozen
TX freq = 50314500 Hz
Drv pwr = 027 W
Pwr meter = 12 dots
KAT SWR = 1.18
KPA SWR = 01.2
PA voltage = 56.8 V
PA current = 13.7 A
PA input = 778 W
RF out = 495 W
PA diss = 283 W
PA effic = 63%
Andy, k3wyc
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