Picked up a Desktrac repeater at the Hamfest today. Transmitter works fine, Receiver works fine. Duplexer is tuned correctly. Problem is that I can't get it to go into repeater mode.. Will receive but will not transmit. It will transmit manually using the Trans button or the hand mic. The power led is lit, the repeater led is lit and the thing I'm not sure of is that the Mon. led is lit. The only thing that I can come up with is this rig is set up for a controller. Am I correct in this guess? Can it be changed with the software? Any suggestions are welcome,,, Thanks.