OK - I'm now home from work and have had an opportunity to look at the station. The backplane has the following number printed on it: TRN6421A
Motorola parts identifies it as: BD INTCONN --- "*This item has been cancelled" This is all I can seem to find about it right now... And Eric, these are the manuals I currently have: Control and Applications Manuals: 68P81025E60-E and 68P81025E60-F MICOR Base and Repeater Stations Manuals: 68P81025E50-G (12W to 75W stations) and 68P81039E55-A (200W and 225W stations) Mark - N9WYS -----Original Message----- From: [email protected] On Behalf Of Eric Lemmon Before cutting any traces, perhaps it would be a good idea to identify which backplane Mark has. If the jumpers are numbered differently than on the common TLN5644A backplane, it's probably wired quite differently. Since Mark described his repeater as being cobbled together from different machines, there may be some incompatibilities to consider. The Micor C&A manual 6881025E60 assumes that the TLN5644A backplane is installed. 73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of ac6vj Sent: Sunday, July 27, 2008 12:43 PM To: [email protected] Subject: [Repeater-Builder] Re: UHF MICOR Unified Chassis Hi Mark: Pull the exciter board out and measure the resistance between pins one and five on the transmitter interconnect board. There should be infinite resistance between the two pins. If there is continuity between pins one and five on the transmitter interconnect board, cut the trace on the exciter board leading to pin five P902, see note 409 on the Exciter/1ST Bandpass Filter schematic pullout in the Micor Base and Repeater Station Manual 68P81025E60. Gregory AC6VJ
