I am happy to learn the DX398 is above par in that regards.
I thought that I had read somewher that it was fairly prone to
overload.
I have used my R2000 with about 800' of wire up in a nature
preserve and had no noticable problems. We camped out,
in a VW transporter, and I listened on and off for 2 days.
BTW your antenna site if a very well organised place and
full of interesting info.

Terry