Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4MTX callsign genealogy
Currently held by NORRISEY, CASIMIR E
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 K4MTX's current licensee, walking backwards.
- Allen, Monty LGAgranted 2008-01-23cancelled 2008-09-26
Successor callsigns
Callsigns held now by people who previously held K4MTX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4MTX, oldest first.
- NORRISEY, CASIMIR E VA1996-05-03 → cancelled 2008-05-06
- Allen, Monty L TX2018-07-07 active