Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB5MTX callsign genealogy
Currently held by ALLEN, JASON K
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 KB5MTX's current licensee, walking backwards.
- MAR, BRYANTXgranted 2024-03-07cancelled 2024-03-26
Successor callsigns
Callsigns held now by people who previously held KB5MTX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB5MTX, oldest first.
- ALLEN, JASON K TX1990-05-22 → cancelled 2002-05-23
- Mar, Bryan T TX2024-03-26 active