Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9ESD callsign genealogy
Currently held by COATS, ROBERT B
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 W9ESD's current licensee, walking backwards.
- Casey, Matt AILgranted 2020-02-04
Successor callsigns
Callsigns held now by people who previously held W9ESD.
- Casey, Matt AILgranted 2020-02-04
All historical holders
Every license row we've seen with the callsign W9ESD, oldest first.
- COATS, ROBERT B CA2005-08-31 → cancelled 2017-11-29
- CASEY, MATT A IL2019-02-09 → cancelled 2020-02-04