Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4DS callsign genealogy
Currently held by SANBORN, EARLE F
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 AB4DS's current licensee, walking backwards.
- SANBORN, EARLE FFLgranted 2000-09-19cancelled 2006-05-02
Successor callsigns
Callsigns held now by people who previously held AB4DS.
- SANBORN, EARLE FFLgranted 2000-09-19cancelled 2006-05-02
All historical holders
Every license row we've seen with the callsign AB4DS, oldest first.
- SANBORN, EARLE F FL1997-05-20 → cancelled 2000-09-19
- SANBORN, EARLE F FL2026-05-28 active