While scanning the GMRS input frequencies last week I found a strong repeater output operating on 467.550 MHz using a 118.8 Hz output code. It was heavily-accented maritime traffic. We found their input on 457.550 MHz (10.0 MHz lower). I presume they were using 118.8 in as well. There were there for 48 hours before departing out the Golden Gate into the Pacific.
The choice of 118.8 is interesting as we get lots of spurious signals on that code (almost 2X 60 Hz??) most everywhere in the bay region - so most repeater owners have disabled that code. So this helps them hide. Yea, a conspiracy theory...
Both the 467.55 and 467.575 have been taken over by maritime traffic here in the San Francisco area for many years (and sometimes includes 467.600, .625, .650 and .675), but it has always been direct mode/simplex.
This is a disturbing development...
I am bringing these incidents up because if we lose control of our repeater input channels, high-level (and some low-level) repeaters will become impractical.