It's not an image signal is it? Could be a false signal that is either a + or - difference one of your radio's IF frequencies. You might look to see what your scanner's 1st and 2nd IF frequenies are and add or subtract those frequencies (i.e. 455 khz, 12.6 mhz, 25.7 mhz, or whatever), see if it comes up with a valid frequency and then try entering that to listen. You can also try entering the input frequency (465.52500) and listening, but my guess it is from the primary output frequency unless you're getting a repeater tail at the end of the transmissions. One also would think someone in Franklin county would have mentioned the interloper by now if it is coming accross on their repeater. The databse also shows Franklin County uses a tone of 156.7 hz. Is this unknown source using a tone on theirs? Once you get their input frequency, you could try some Foxhunting to track them down further (try a Google search on "Radio Fox hunting" for some good suggestions on easy ways to track down an unknown signal.....
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