Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC8SD callsign genealogy
Currently held by COOLIDGE, MARY J
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by AC8SD's current licensee, walking backwards.
- COOLIDGE, MARY JOHgranted 2014-07-21cancelled 2014-10-17
Successor callsigns
Callsigns held now by people who previously held AC8SD.
No current licensee on record previously held this callsign.