Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4MI callsign genealogy
Currently held by KING, STEVEN R
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 AB4MI's current licensee, walking backwards.
- KING, STEVEN RVAgranted 2015-01-14cancelled 2015-03-17
Successor callsigns
Callsigns held now by people who previously held AB4MI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB4MI, oldest first.
- COOPER, KENNETH C FL1989-01-03 → cancelled 2001-01-04
- KING, STEVEN R VA2025-04-11 active