"The Elecraft KPA500 amplifier also works efficiently into a load SWR of 1.5:1"

Any such claim is at best misleading.   There may be some 1.5:1 loads that that 
the KPA500 will be happy with but there are other 1.5:1 loads that it will 
object to, to the point of giving multiple PA DISS faults.  1.5:1 SWR does not 
define the load characteristics.   A 1.5:1 load could be pure R or it could be 
a complex impedance.  The efficiency, PA dissipation, and risk of fault trip 
are not defined by the SWR.

73,
Andy k3wyc






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