At 07:41 PM 10/22/07, you wrote: > > I'm proposing a novel application of the circulator (an > > isolator without the dummy load on one port).. > >Yes, I know what you're trying to do, and it's nothing new. UHF Micor >mobiles have an isolator in the antenna network that routes received RF >through the isolator to the receiver when the transmitter is not keyed. I >forget how the full-duplex Micor med radios were set up; I believe the >antenna network in those radios was different, maybe somebody else >remembers.
(rest deleted) The original med radio manual is on the Micor page at repeater-builder as a PDF: >Emergency Medical Systems Duplex / Repeater UHF Mobile Radio manual >supplement PDF file courtesy of K9ROD > <http://www.repeater-builder.com/micor/pdf/micor-ems-uhf-manual.pdf> >This is the no-longer-available manual supplement for the full-duplex >dual-receiver repeating ambulance radio model Q2033 and Q1853. Note >that you need the regular UHF mobile manual 68-81015E70 to go along with it. >Note this is a 16.6 MB file

