Hi Andy, You should have the duplex back plane unit (the card cage) as easily defined having the R1-Audio Card horizontal above the station control module. If the unit has CTCSS (PL) there will be a PL Module horizontal above and on the left side.
It is possible to duplex a "base station" chassis, but the mod is not super easy or for the faint of heart. The base station msr-2000 back-plane does not have the row of three card slots sitting above the main vertical module card slots (positions). In duplex operation you should have the Station Control Module, a time out timer (not really required but should be), a Squelch Gate Module, R1-Audio and PL Module (if you're going to run CTCSS). There are minor variants and subs to the above list. s. > "Andy Carstarphen" <andycarstarp...@...> wrote: > > I have an MSR2000 half-duplex base station that was removed from railroad > service (161 MHz). I would like to convert it to a repeater for one of our > local volunteer fire departments. Does anyone have a list of boards required > to make the station act as a full duplex repeater. The output will be in the > 154.145 MHz and the input will be 155.205. > > Thanks, > > Andy Carstarphen - WY5V >
