[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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