Bob Ricci wrote: > I'm going to combine several issues into one email. > > With the help of this group and individuals like Bob - NO6B, I > finally have our first repeater online. It sounds great but of course > needs work. > > We currently have an interference issue from a repeaters whose output > is 15 Khz away from our input and pound in at over 100 over S9 and > more. My meter cannot read that high. Software reports that their > signal is 1146uV (that's as high as it can read.) Coverage prediction > software indicates that the RX level over the path should only be > 224.5uV if they are transmitting 50 watts into a 6dB gain atenna. > Considering that we are over 100 miles away from the other repeater > its clear we have a problem that involves working with the other > repeater. But alas, this is southern California and not so black and > white. Any suggestions are greatly appreciate while I work with the > frequency coordinators. > > I know that an Angle Linear does a good job filtering inband signals, > but can it get close enough to effectively notch even some of the > interference? 15 Khz is pretty darn close. > > WTB: I am looking for a GM300 for 6 meters or equivelent. > > Bob - AF6D
The first question I can think of-is the interference you get continuous while the other repeater is transmitting, or do you just hear 'blips' of modulation peaks? If you only hear peaks, either your receiver could use a better IF/detector section, or they are hitting the deviation too hard (much more likely in my opinion.) If it's continuous, again, you might have a receiver issue, or they might be a little dirty. If you have something like a Micor or MastrII rx, and it's working right, then you're about as good as it gets.
