Any idea why San Diego is specifically called out? I'm guessing this is related to the large military presence here?
23. Current Federal use of the 1900-2000 kHz band is light, with 10 assignments that authorize
operations in this band. A single Federal assignment authorizes land and mobile stations in the RLS to
transmit on 1922 kHz using a necessary bandwidth of 600 hertz (Hz) within a protected radius of
193 kilometers (km) centered on San Diego, California. All other Federal assignments in the
1900-2000 kHz band are for unallocated uses, and thus, these assignments operate on an unprotected and