There was a 6 meter repeater here in Connecticut that was receiving interference from an AM station several states away that was broadcasting on 1000KHz. It only occurred in the nighttime. (The 6 meter repeater was on a 1MHz split). They narrowed it down to something on the 21+ towers that are on the site, but never found it to my knowledge. It could have been a piece of loose hardware, rusty joint, bad antenna, etc. If I remember correctly, rain made it go away. This can be a real bugger of a problem to find. I would look at guy wires or anything that is long enough to pick up enough signal from your 600KHz station. Does it happen when it rains?
73, Joe, K1ike On 4/25/2010 11:06 PM, lpcoates wrote: > Hi > > We have a local AM radio station on 600 kHz. Their transmitter site is about > 10 miles from the center of the city. From what I've found on the web, they > run 25,000 watts during the day and 8,000 watts at night. On at least one of > our repeaters we're finding that this is mixing with the output of repeater > to create a phantom signal exactly on the input. We're not sure whether the > mixing is happening inside the repeater or in something in the environment > near the repeater. We've confirmed this is the source of the problem on one > repeter and supect it on another. Has anyone had experince with a loacl AM > station on 600 kHz? We're looking for way to combat the interference. > > Thanks > > Bruce - VE5BNC >
