[Elecraft] Extra Protection For KPA500?

[Mark Musick]

Tony,
All you need to do is go into the config menu, go to PWR SET and change it from "nor" to "Per bAnd".
I have no idea what you are talking about with the LOCK function. The lock function I'm familiar with just locks the VFO A frequency.
As to the input protection circuit on the KPA500, I'm sure it is pretty robust and knowing Elecraft I wouldn't worry about it failing.
Of course you don't want to hit the KPA500 with 100 Watts. I would think you would want to develop some sort of operating procedure for your shack to make sure that doesn't happen. 

73,
Mark, WB9CIF

-----Original Message-----
From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Tony
Sent: Friday, March 6, 2020 06:06
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] Extra Protection For KPA500?

All:

Thanks for the advice regarding protection for the KPA500. I use more than one rig with my KPA500 so one has to pay attention to the drive levels. I suspect the protection circuit could fail if you accidentally pump 100 watts into the amp now and then.

Regarding the K3S power-per-band setting: it looks like it requires the LOCK function to keep the power level one chooses. Is that the way it works or is there another option besides LOCK?

Tony

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