[Elecraft] KPA500

[Eric Swartz - WA6HHQ, Elecraft]

The KPA500 fold back point in firmware is an SWR of 2:1 at its rated 
output of 500W.  (This is based on reflected power and will occur at 
lower SWRs if the amp is operated above 500W) At that point it first 
inserts a 3 dB input attenuator and flashes the fault LED. (This is a 
soft fault.) Slightly reducing drive will reset this back to full gain.

What rig are you driving the KPA500 with?

73,

Eric
---
www.elecraft.com


On 2/13/2012 11:51 AM, Don Etters wrote:
> The KPA500 is a great Amp. but it does not like SWR over 1:5 –1 an band width seems narrow . How have you handled this with you antenna’s . Is anyone using a tuner any suggestion will be apreciated
>
> Don
> W4DEE
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