[Elecraft] KPA500 tolerance

Jim Brown jim at audiosystemsgroup.com
Wed Jun 29 14:12:56 EDT 2011


On 6/29/2011 7:43 AM, jgaudron wrote:
> A friend of of mine has problems with a solid state amplifier that switches
> to safety at the least value of SWR, like 1.2 or 1.4 !
> He would like to know what is the KPA500 tolerance concerning  SWR.

My KPA500 puts out 600W - 675W (I've seen occasional peaks of 700W 
without faulting) into a reasonably matched load on the HF bands (1.5:1  
or better), and 560W on 6M into a load of about 1.4:1.  If the match 
gets to about 2:1 on the HF bands, it might fall back to 500-550w.   No 
issues with nuisance faulting.

73, Jim K9YC


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