[Elecraft] Strange KPA500 problem on 6M

[Mike va3mw]

As quoted

If the amp works on a dummy load, then look beyond the amp at this time until you have eliminated everything else. 

Somewhere else you are getting a voltage breakdown that is arcing and tripping off the amp due to high swr. An MFJ analyzer will not show that. 

Mike va3mw

> On Dec 4, 2016, at 12:54 AM, Jim Brown <jim at audiosystemsgroup.com> wrote:
> 
>> On Sat,12/3/2016 9:41 PM, Vic Rosenthal wrote:
>> Look at any cables, switches and connectors that are common to the various antennas.
> 
> Yes. Lots of "off-brand" coax is junk. So are most un-branded connectors. If the PL29-style connector doesn't say Amphenol 83-1SP, it's probably junk. How well is the connector soldered or crimped? If crimped, was it done with the "official" crimper for the "official" crimp connector that matches THAT specific coax? If not, it's suspect.
> 
> Are you using any of those shiny adapters that are sold at hamfests for a few bucks? They're JUNK! Ask me how I know. :) They have caused me many problems that were tricky to diagnose.
> 
> IMO, the only GOOD coax connectors say "Amphenol" on them, or are ancient MIL-spec parts with MIL numbers stamped into them. I snap up stuff like this when I find it at ham flea markets.
> 
> 73, Jim K9YC
> 
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