[Elecraft] Very High SWR on all bands; K3 #6957

[Bob McGraw]

I don't know how many times I've stated "test on a known good dummy 
load".  Just because it says 50 on the label or outside, don't trust 
that, it may be that or it may not be that.  I have 4 dummy loads.  They 
all measure differently. Most are higher than 50 ohms, one actually at 
65 ohms.   Also be aware of the condition of the associated jumpers used 
in the testing process.  One can measure the resistance using an ohm 
meter.  To measure the reactance, which does always exist, one need an 
antenna analyzer or VNA.   50 ohms +j0 is great.

73

Bob, K4TAX

On 5/15/2026 11:00 AM, elecraft-request at mailman.qth.net wrote:
> Message: 1
> Date: Thu, 14 May 2026 17:18:26 +0100
> From:<doc.lock81 at gmail.com>
> To:<elecraft at mailman.qth.net>
> Subject: [Elecraft]  Very High SWR on all bands; K3 #6957
> Message-ID:<044e01dce3bd$4b8ba7c0$e2a2f740$@gmail.com>
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>
> I had a couple of private responses, for which I am very grateful.  After
> checking several items all of which were OK, checked the dummy load.  Which
> was not OK; doh.  With a good dummy load, everything is showing normal. Huge
> sigh.
>
> Peter M0RYB