I've tuned duplexers with a signal gen and receiver, with a spectrum anal with tracking gen and sweep gen with detector. The spectrum anal with tracking gen was the best, but all worked.
One thing a sweep gen gives you is not only the notch, but the width of the notch which a simple gen with rcvr does not unless one moves back and forth in freq. If you write an article one note to put in. Often it is required one slows down the sweep for the detector will not show the complete notch for it occurs fast. Slowing it down will show the true response. 73, ron, n9ee/r --- In Repeater-Builder@yahoogroups.com, "w6nct" <[EMAIL PROTECTED]> wrote: > > > I was recently told (by another ham) that I could ONLY tune up my 70cm > duplexer cavities using something called a "tracking generator". > Unfortunately I do not have one; and judging the prices I have seem > for things with that name on the web, I doubt that I can easily budget > to purchase one. > > For some reason, I thought that my father used to tune up resonant > cavities using a sweep generator, oscilloscope, and a frequency > counter; but I don't recall the exact setup he used. > > I inherited his Wavetek (Model #1080, 1GHz) sweep generator, > oscilloscope, and frequency counter. I also have access to an > IFR-1100 service monitor, if I need it (i.e., can be borrowed from a > friend). > > Can I tune up my 70cm duplexer cavities using the equipment I have? > > If so, could someone please indicate the test setup and procedure. > > Thank-you. >
