[R-390] antenna connector

[glwebb at gundluth.org]

I have an adaptor that came with my  Motorola R390A that preserves the
balanced input.  A little box made from pieces of  circuit board soldered
together with
two pins to fit the balanced  connector on one side and a BNC connector on
the other.
In between is a wideband transformer made with windings on a two hole
ferrite bead.   It works very well.  Sorry I don't have any photos.

Gary L Webb NI9V