LJ wrote:

Yes, axactly. But why is it doing it on bands like 40 and 10 Meters, but not on 20?

It's a poles and zeroes thing.
I'd first take a look at the bandswitching knob, though. Then I'd start
looking for anything bent that could be causing parasitics.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."