Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4HZ callsign genealogy
Currently held by MARVIN, JACOB
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 AB4HZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AB4HZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB4HZ, oldest first.
- MARVIN, JACOB FL1998-10-30 → cancelled 2010-11-02
- Thomas, Samuel W GA2013-06-25 → cancelled 2025-06-26