George, I believe this is one of the 6 cavity mobile duplexers. If so then there is a notch only tuning and the bandpass is wide with no adjustment.
I've used these and they work very well. I always tuned the lo for the lo freq and hi for hi no matter if hi/lo was rx or tx. 73, ron, n9ee/r >From: George Henry <[EMAIL PROTECTED]> >Date: 2007/07/10 Tue AM 08:56:16 CDT >To: [email protected] >Subject: [Repeater-Builder] Notch duplexer dumb question > >I have a Motorola TDN7407A notch duplexer (in reality, a Motorola-branded >Celwave 633-6A-2N) that I want to use for a low-power GMRS repeater. The >ports are labeled HI and LO.... now for the dumb question, do those labelings >refer to the NOTCH frequency or the pass frequency? Unfortunately, it is not >labeled with the current tuning, and I don't have easy access to anything to >sweep it with.... > >George, KA3HSW / WQGJ413 > Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
