Watch your signal strength meter on your radio. The input signal may not be
weak enough to hear a "noisey-quiet-noisey" Actually while tuning for a
notch you need to be listening to the freq you are trying to notch and it
will be a "quiet-noisey-quiet" as you move the notch rod on the side. Tune
fo
You need to have a service monitor that has a tracking generator / spectrum
analyzer to accurately tune the duplexer. Find someone that has one help you
with tuning the duplexer. If nobody has one, take it to a radio shop and ask
if they could please re tune it. They may or not charge you.
Mike
You don't move the Invar rods at all- those are the pass adjustments. You
first adjust the Invar rods for minimum insertion loss at the pass
frequency, then you adjust the side rods to achieve maximum rejection at the
notch frequency. Just so we're talking apples and apples, the Invar rod is
in t
3 matches
Mail list logo
