Dave Butler wrote:

Interesting that is the first time someone else has reported a similar
problem. We also (allegedly) did the swap the antenna test. I say
allegedly because I'm not convinced it ever occurred.

But because you had a similar issue with the KX155 could there be some
interaction there? I know that is a long shot but interference is a
funny thing.

Do other folks have a GNS4x0 and KX155? I've got to believe that is a
very very common config.

KC

ktbr wrote:

Sounds like the antenna or the coax.

Good point. An overy bent or kinked and pinched coax mould be a problem.

An easy way to test this would be to swap the coax between
the two radios and see if the 430 improves and/or the 155
degrades.

Just as another data point, we had the same problem with our GNS480. The
comm section may be the same as the 430, I'm not sure about that.
Anyway, we swapped the antenna cables between the 480 and the KX155 to
see whether the problem stayed with the radio, or moved with the
antenna. Oddly, the problem just went away, or at least became less
pronounced. Maybe something got unkinked, I don't know. The KX155 is
still the more sensitive receiver.

DGB