With such an out of balance antenna, the case, power supply and leads of
the transmitter are all going to be parts of the real antenna. I'm not
sure, therefore, that you can rely on an SWR measurement made using
other equipment.
You should certainly make sure that paint is removed from inside the
panels around where the 2-d fasteners go, to maximise the RF integrity
of the outside of the case. As you are not using a microphone, you
probably don't need to bond signal ground to the case there, as well
<https://ftp.elecraft.com/K2/Mod%20Notes%20Alerts/Grounding%20the%20K2%20Mic%20Jack.pdf>.
PS. Starting a subject with Re, when it is not a reply, will be scored
as possible spam by some spam filters.
--
David Woolley
Owner K2 06123
On 23/11/2021 11:57, E J Martin wrote:
I have a long wire resonant (SWR < 1.4) across the 40 band hence don't need an
ATU.
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