Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NO9S callsign genealogy
Currently held by Butler, Stephen L
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 NO9S's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held NO9S.
- MC GUIRE, THOMAS JIAgranted 2018-11-29
All historical holders
Every license row we've seen with the callsign NO9S, oldest first.
- MC GUIRE, THOMAS J IA1998-12-14 → cancelled 2008-12-05
- Butler, Stephen L FL2022-03-11 active