[Elecraft] KPA500 Faulting on high SWR on power rise

[Dave Cole (NK7Z)]

Be aware that the device on the page linked presents DC blocking to your 
feed line, at least the schematic indicates that.

If you are running an RCS-4 remote coax switch, (or any coax switch that 
runs control voltage down the coax), you will need to get a device which 
passes DC, or change switch types.  This assumes you mount them at your 
cable entrance point, and have the switch end beyond that point.

73s and thanks,
Dave
NK7Z
https://www.nk7z.net

On 02/24/2018 08:19 AM, john at kk9a.com wrote:
> Great troubleshooting.  After a recent Elecraft post by K9YC I purchased
> three of these
> https://www.arraysolutions.com/surge-and-rf-protection/as-303u and I will
> likely buy more as they look really nice.
> 
> John KK9A
> 
> K1AY wrote:
> 
> Thanks Don, and everyone.
> This morning, after reading the posts, I took an approach similar to what
> Don is proposing.
> I bypassed the surge protector, and voila, problem gone.
> Now I have a new problem:  The Alpha Delta model TT3G50 is clearly marked
> HP, but it's behaving like a 200W version.
> The good news - that's an easier problem to solve.  Sometimes just being
> able to discuss the issue helps one solve it.
> 
> Thanks everyone for all the help and support.
> 
> 73 de K1AY
> Chris
> 
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