Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AA4OT callsign genealogy
Currently held by HAMRICK, JOHN C
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 AA4OT's current licensee, walking backwards.
- Ji, HojoongFLgranted 2023-07-08cancelled 2023-12-05
Successor callsigns
Callsigns held now by people who previously held AA4OT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA4OT, oldest first.
- HAMRICK, JOHN C GA1995-12-08 → cancelled 2007-12-11
- Ji, Hojoong FL2023-12-05 active