Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KY4MTM callsign genealogy
Currently held by Mackey, 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 KY4MTM's current licensee, walking backwards.
- Mackey, Mark TKYgranted 2015-05-21cancelled 2016-03-22
Successor callsigns
Callsigns held now by people who previously held KY4MTM.
No current licensee on record previously held this callsign.