Re: SWR safe levels question
Posted by
Bob Cunnings NW8L on
Aug 28, 2011; 5:37pm
URL: http://elecraft.85.s1.nabble.com/SWR-safe-levels-question-tp6734646p6735135.html
If you're looking for a documented level, here's the change note
describing the SWR power rollback feature when it was introduced (MCU
1.87 / DSP 1.69 on 5-3-08):
* POWER ROLLBACK BASED ON REFLECTED POWER: Power rollback begins at about
2.5:1 at 100 W (and of course much higher SWRs are tolerated at
lower power settings).
Recovers to original target power level after mismatch is corrected.
When making antenna tuner adjustments I adopt the usual convention for
solid state finals: keep the SWR below 2:1. In the case of the K3 that
apparently puts me well below the foldback threshold at 100 W so I'm
content. It's the SWR indication on the K3 that I care about since
that's what's driving the K3's foldback feature.
Bob NW8L
>I have been searching for the "safe" swr level for the k3.
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