Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5MST callsign genealogy
Currently held by THREADGILL, MATHEW S
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 N5MST's current licensee, walking backwards.
- THREADGILL, MATHEW STXgranted 2008-12-18cancelled 2013-04-19
Successor callsigns
Callsigns held now by people who previously held N5MST.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5MST, oldest first.
- MOORE, KATHLEEN L TX1988-06-14 → cancelled 2000-06-15
- THREADGILL, MATHEW S WY2023-03-07 active