[Elecraft] K3/KPA500/KAT500 SWR Problem

[Dick Dievendorff]

Yes. You were transmitting on 50.376 MHz.  The forward power was measured at
1411, which is a bit north of 300 watts.  

It appears that the amplifier key line is not being interrupted by the
KAT500.  We can hot switch KAT500 relays at up to 100 watts, but not higher.

73 de Dick, K6KR



-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of n8ag at comcast.net
Sent: Tuesday, December 31, 2013 10:34 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3/KPA500/KAT500 SWR Problem

I've experienced the same issues others are reporting with the KAT500. The
problem is somewhat intermittent. However, it seemed to happen more
frequently after going to the 1.41 firmware. After reading one of Dick's
posts, I checked the Fault Table just to see what it had in it. I'm seeing
the following event logged numerous times.

03 - VFWD above relay hotswitch limit  F 50376 VFWD 1411 VRFL 9 VSWR 1.08
VSWRB 2.74

It there some way to "decode" this?

73,
Dave N8AG
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