Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC0JO callsign genealogy
Currently held by Jamieson, James R
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 AC0JO's current licensee, walking backwards.
- Jamieson, James RMNgranted 2007-06-07cancelled 2007-10-20
Successor callsigns
Callsigns held now by people who previously held AC0JO.
No current licensee on record previously held this callsign.