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

Fri May 15 13:19:48 EDT 2026

Ahhh Yes!  Most shacks and every shop has a bunch of jumper cables of 
various vintage and connectors.  Often they hang on the wall.  They do 
wear out.  Connectors become loose after many uses, shields separate and 
sometimes even become disconnected.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

------ Original Message ------
>From "Bob McGraw via Elecraft" <elecraft at mailman.qth.net>
To elecraft at mailman.qth.net
Date 5/15/2026 9:33:44 AM
Subject [Elecraft] Very High SWR on all bands; K3 #6957

>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:<[email protected]>
>>Content-Type: text/plain;	charset="us-ascii"
>>
>>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
>______________________________________________________________
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:Elecraft at mailman.qth.net
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html
>Message delivered to k6dgwnv at gmail.com