Andy, What a coincidence! My radio club just received a working MSR2000 base station a week ago, and I am digging into it right now.
First of all, please advise what the complete model number is. This should be something like C73KSB-3106B, but some digits or letters will differ. Please include all suffix letters. Next, please advise the black ink-stamped part numbers on the exciter and receiver circuit boards. The exciter is the horizontal board on the left as you face the front of the station, and the receiver is on the right of the same shelf. You might have to remove a shield cover from the front of the shelf in order to reach these two modules. The exciter will probably have a number like TLD9232BPR, and the receiver will probably have a number like TRD6302APR. These number are usually stamped on the bottom of the circuit boards, so you must pull each card out of the shelf to read them. While you have them out, please make a note of the transmit and receive frequencies that appear on the channel elements. Some models of MSR2000 stations were fully-shielded, and suitable for repeater service, even though they were sold as base stations. You may be able to convert your base station to a repeater station by changing to a duplex exciter and adding a squelch gate and TOT modules, but until we know exactly what you have, it's difficult to give you a shopping list. Do you have a service manual for this station? If not, be aware that the MSR2000 VHF station service manual 68P81061E50-C is out of print but is being scanned into full-page PDF at my local graphics house, and should be posted on the RBTIP within a few weeks. The other manual you need is the Control and Audio manual 6881061E40. The good news is that it is still available from Motorola Parts. The bad news is that it costs about $60. Due to copyright restrictions, it will not be scanned while it is still available for purchase. One last thing: Is there a blue Anderson PowerPole connector on the side interface panel, below the antenna connector? If so, your station may be equipped with the optional battery charger power supply, which is a good thing. 73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Andy Carstarphen Sent: Monday, May 18, 2009 3:28 PM To: [email protected] Subject: [Repeater-Builder] MSR 2000 simplex base station conversion to repeater 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 alist 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
