What are the frequencies of your repeater and the frequencies on the nearby antenna????
What are the radios used on the nearby antenna? Important information in determining the problem - I had one source of noise caused by a Mastr III that had a spur of considerable strength at 12.8MHz down from the transmitter carrier - synthesizer oscillator! It was received with the correct transmitter modulation as the carrier frequency and a pass on it or a notch at -12.8 MHz solved our problem. The level of the emission was within spec of the Mastr 3 but was still too strong for our antenna at 500' away. What is the configuration of their filters? 4' horizontal separation is not much at all so filters should be designed to all the frequencies used to work together. Then, it only takes one transmitter to cause noise in an antenna if the antenna is "noisy". What does the interference sound like? Harold, VA3HF --- In [email protected], Ken Arck <[EMAIL PROTECTED]> wrote: > > At 11:06 AM 7/26/2007, you wrote: > > > > Intermod means there is mixing in YOUR PA with some outside RF energy. > > <----I should probably clarify that "intermod" is an often misused > term that has become a generic terms used to describe just about any > type of received interference. Ya know, kinda like Klenex has become > the name for any tissue. > > Intermod is a very specific type of phenomenon and for accuracy, > should only be used to describe intermodulation issues and not mixes, > adjacent channel interference, etc. > > (more of my 2 cents) > > Ken >
