On Dec 9, 1:07*pm, Ed wrote:
* We have 2M packet node transceivers at a new government radio site. * The
new site owner requires isolators be installed on all transmitters. *As you
might surmise, it doesn't seem possible to do so on a simplex one RF port
radio such an Alinco DR-135.

* Anyone out there with some realistic suggestions on how we might manage
to do this?

* Ed * K7AAT

As described elsewhere, by using RF bypass relays for receive, the
isolator can be installed as designed, with one port terminated.
(This rig still requires bandpass filtering to keep intermod products
from being generated in the front end of your receiver and being re-
radiated. Such EMI can be very nasty.)

Sal