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" <[email protected]>
To [email protected]
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, [email protected] wrote:
Message: 1
Date: Thu, 14 May 2026 17:18:26 +0100
From:<[email protected]>
To:<[email protected]>
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:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
