Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JIA callsign genealogy
Currently held by TOLLISON, ROBERT E
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 K4JIA's current licensee, walking backwards.
- Ackert, JamesFLgranted 2023-08-12cancelled 2023-09-29
Successor callsigns
Callsigns held now by people who previously held K4JIA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JIA, oldest first.
- TOLLISON, ROBERT E AL2011-02-05 → cancelled 2023-03-13
- Ackert, James FL2023-09-29 active