Date: Sat, 22 Sep 2018 23:12:50 -0500
From: John Simmons <jasimmons@pinewooddata.com>
To: Amps@contesting.com
Subject: [Amps] Solid state amp high SWR distortion
<I'm converting from a tube amp to a solid state amp. I've seen
<references to increased distortion caused by a solid state amp when the
<SWR is high, not high enough to cause reduced (foldback) power. Can
<anyone point me to hard numbers (not folklore) on this? For example, say
<the amp's IMD is -40 at 1:1 but increases to -35 at 1.7:1. Do you need
<an antenna tuner is your SWR is less than 1.5:1?
<73,
<-John NI0K
### The fellow who 1st brought that up was K9YC..and that was the 1st I had
heard of the
increased IMD vs swr. Dunno if that pertains to just the KPA-500 amp..or
all of them.
## Hopefully K9YC can chime in.
Jim VE7RF
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