W8MSU Repeater interference tracking
Over past weeks, interference to the 442.900 W8MSU repeater has been noted in the form of "kerchunks" every 10 seconds for about 1/4 second. The source of the interference has been found on 2 Jan 2007, and work is underway to resolve the issue.
I can audibly hear it from approximately 440.0MHz through about 444.500MHz (although that may vary). I hear it as a distinct "click" in the SSB receiver anywhere in that band when this one specific transmitter that is over 5 kilometers away goes from inactive to active.
The majority of the energy is close to 442.900, but it slowly dies off to the frequency extrema noted above.
I estimate the ERP of the interferer to be roughly 100mW (within an order of magnitude).
Audio files of interference
Note: I don't have any recording of it interfering with the repeater; it sounds like a "beat note" when two signals are beating together.
New (10 Jan 2007) recording of new mode of interference--buzz with wide voice modulation
2 second recording in SSB mode2 second recording in FM with open squelch
2 second recording in FM with squelch closed