I have an NHRC-7 controller I've been fiddling with for a while... 2 ports - one is a Motorola GR1225 repeater fed off of the 16 pin accessory cable; second is a Mastr II repeater station fed from the back control shelf terminals.
Both repeaters, regardless of which port they're connected to, will not key the PTT lines until after the COR line has dropped (receiver has squelched)... At that point, courtesy tone for that port goes out, followed by the hang time and carrier drop. CWID transmits on both repeaters without any issue. I had this issue initially with the GR1225 when it was the only radio on the controller; I believe the fix was to change the COR output to either active low or active high (whatever the opposite of what it was setup as). No programming changes have occurred to the controller or GR1225 since then; just the addition (and removal back to it's original controller) of the Mastr 2 station. It's the damnest thing - I've checked the watt meter on both repeaters during this and they're no RF being transmitted until AFTER the COR line drops. Ideas? 73s, AJ, K6LOR
