[NLRS] SWR infinite on 432.....rats!

[David Palm]

So I've been having a bit of intermittent and puzzling issues on 432 MHz
for the last few weeks.  I got through the UHF contest okay, but as of two
days ago the SWR has decided to go infinte and stay infinite.  I swapped
out the N connector on the LMR-400 down-cable right at the rig, which after
a lot of horsing around to figure out the problem, had started to seem
flaky anyway.  No change.

I've run the rig into a dummy load and I know for sure I'm getting power
out and that into a 50 ohm load everything is as it should.

So....it seems that the only thing is to break this down by subsystem.
First, climb up there, unwrap the waterproof connection between the LMR400
down-cable and the flexible rotor loop, terminate the main down-cable with
a 50 ohm load, and see if that's the culprit.  If not then climb all the
way up, detach from the antenna and test the rotor loop by itself.
Finally, test the antenna with a known-good cable.

Any hints or sage advice out there on making this easier?  Or more probably
it just is what it is.

73,

David  W9HQ