Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1MAT callsign genealogy
Currently held by MASON, CHARLES F
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 K1MAT's current licensee, walking backwards.
- Cross, Matthew AAKgranted 2017-07-25cancelled 2017-08-15
Successor callsigns
Callsigns held now by people who previously held K1MAT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1MAT, oldest first.
- MASON, CHARLES F NH2004-09-09 → cancelled 2016-12-09
- Cross, Matthew A IA2017-08-15 active