[R-390] Below 8mhz problem

[Spence Barton]

Greetings R-390 list. My first post.

I recently got a Motorola R-390a. My first. It works well and I have really
enjoyed using it. In using the cal mode, though, I noticed that I still
heard stuff from the antenna and there is no relay click between cal and
mgc. A quick removal of the top cover to troubleshoot showed that the
antenna relay module had been removed by persons unknown. End of
troubleshooting. It also has only a hole where the balanced jack would be
and the unbalanced jack is not original. The receiver is in otherwise quite
good condition - very clean. It has probably been rebuilt by a past owner.

I am considering whether to try to find an antenna relay module to install.
Right now I don't need the balanced jack or the break-in feature but I might
want them in the future. Any thoughts on whether it should be replaced or
where one might be found? I have heard that Rick Mish routinely removes the
balanced antenna jack and replaces the unbalanced jack with another type.
Any truth to this?

Thanks for the help.  I have really enjoyed reading this reflector for the
past month.

Spence Barton