Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4ABG callsign genealogy
Currently held by Hoobler, Jack M
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 KJ4ABG's current licensee, walking backwards.
- Hoobler, Jack MFLgranted 2025-12-02cancelled 2025-12-30
Successor callsigns
Callsigns held now by people who previously held KJ4ABG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ4ABG, oldest first.
- Getz, Peter M SC2007-10-22 → cancelled 2019-10-23
- Hoobler, Jack M FL2025-12-30 active