Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9GPA callsign genealogy
Currently held by Green, John
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 W9GPA's current licensee, walking backwards.
- Green, JohnGAgranted 2025-07-23cancelled 2025-08-12
Successor callsigns
Callsigns held now by people who previously held W9GPA.
- Buchanan, Matthew WINgranted 2019-06-15cancelled 2021-12-15
All historical holders
Every license row we've seen with the callsign W9GPA, oldest first.
- Buchanan, Matthew W IN2019-04-06 → cancelled 2019-06-15
- Green, John GA2025-08-12 active