WPA has standard CTCSS tones (and CDCSS codes), but use (decode) is not mandated except in specific cases, and encode is highly recommended. On SNP pairs, the CTCSS/CDCSS Tones/Codes are coordinated only to the extent to prevent reuse in a given area.
Regardless, CTCSS/CDCSS use does not make a repeater closed. A closed repeater is one on which users are not authorized to use unless given permission by the owner/group/another member/whatever. It could even be CSQ receive and be closed. An open repeater is one which anyone can use UNLESS they have been denied authorization. BTW, WPA had a linear translator on the air, but the owner removed it after interference from users of FM repeaters in other states whose bandplan didn't include LTs. As there was no interest in the mode, WPA followed suit and coordinated FM repeaters in that segment since it was clear it wasn't usable for LTs. Joe M. Don Kupferschmidt wrote: > As there are many hams who are replying to this thread in the CONUS, has > anyone checked to see if their individual coordination body has either > recommended or mandated PL/DPL (or other regulated means) to keep a system > that has been coordinated closed (or open)? Any guidelines that you wish to > share with the group?
