--- In Repeater-Builder@yahoogroups.com, "Gary Schafer" <[EMAIL PROTECTED]> wrote: > > Intermod IS the result of mixing. The mixing can take place in your receiver > (commonly called receiver intermod). > Mixing can take place in your own transmitter, which generates a product > that falls on your receive frequency(or on someone else's) or the mixing can > take place in someone else's transmitter with the resulting product falling > on your receive frequency. It is all intermodulation. i.e. the result of > mixing of two or more frequencies in a non linear device.
And, if I understand correctly, even a loose/poor/corroded connector or other diode type of junction in the RF field can be at fault. I am admittedly inexperienced in this sort of issue. For the record, the interference appears as an on frequency signal (leading me to initially suspect intermod of some type) with clear audio of the dispatcher and officers. At first I thought I heard a second level of audio as well that I haven't been able to identify it whether it is background or another transmitter--partly due to catching it at the right time, and partly because my QTH doesn't allow me to hear it very well. KC0MLS thought receiver overload may be the issue so that's why we're trying the Celwave cavity. As much as I'd like to go in and rebuild the site properly, hire climbers to reposition the antennas, and send them the bill, it's not within the realm of possibility. So, let's just toss out any ideas of working with anything but the amateur radio repeater. - Nate >>
