I actually have seen those mobile duplexors labeled both ways, but commonly the labeling refers to what is connected. "Low" would be your 462 freq pass and would be tuned to reject 467. Most of those UHF mobile notch duplexors fairly broad banded and probably will not matter as long as YOU know how they are tuned.
Danny KD4RAA On 7/10/07, George Henry <[EMAIL PROTECTED]> wrote:
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
