On 19 Apr 2006 18:07:00 -0700, "RHF"
wrote:

David - Switched or un-switched the Exposed Outer Ring
of the 1/8" Mono Jack used for the Earphone Output is
usually the Radio's Electrical Circuit Ground and is also
the RF Signal Ground.

NOTE - This idea and application is mainly for Radios
that do not have a built-in External Antenna Input that
offers a Grounding "Attachment" Point for the Radio.

iane ~ RHF
.
Why? For what purpose? Ever owned a Drake SW series?