Anyone have any idea what the many many many digital tone burst
occuring on channel 23 are? I know that channel 23 was designated as
a remote control channel even in the 1970s. I've heard remote control
hobby airplanes there before, but in the last year or two there has
been a substantial increase in these "packet radio" style tone burst
on channel 23. I've heard them in Phoenix, AZ in South Carolina.
The tone burst are present 24 hours a day, and are far too numerous
and too frequent to be a person manually operating a remote controlled
device such as a toy car or airplane. A remote control toy generates a
constant carrier with varying tones, but these signals are occuring in
short burts of tone sequences.

Night Ranger