Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MTK callsign genealogy
Currently held by KIMBALL, MATTHEW 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 K4MTK's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4MTK.
No current licensee on record previously held this callsign.