[Elecraft] KPA-500 died

[RLVZ at aol.com]

On at least one occasion when I thought my amplifier had  blown up, and it 
turned out only to be a bad coax cable in the shack.   So even when testing 
by running the amp directly to a dummy load, it's a good  idea to try more 
than one coax cable.
 
73, 
Dick- K9OM
 
 
 
In a message dated 1/19/2014 12:01:26 P.M. Eastern Standard Time,  
elecraft-request at mailman.qth.net writes:

I did a  similar test using a dummy load (Mil-Spec 2 kW)  with the KAT500 
in  line and carried on a "QSO" while watching all the meters. After 
about 45  seconds the tuner went nuts and started a retune - with no 
change in  frequency etc. having been made. I did this to eliminate any 
futher waste  of time checking and repairing non-existent antenna problems.

For the  naysayers: The dummy load does not heat up at that low power.

Going  directly to a dummy load eliminates everything in the antenna  
line(s).