Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MTM callsign genealogy
Currently held by MATTHEWS, MARK T
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 K4MTM's current licensee, walking backwards.
- MATTHEWS, MARK TVAgranted 2011-11-15cancelled 2016-04-01
Successor callsigns
Callsigns held now by people who previously held K4MTM.
No current licensee on record previously held this callsign.