Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4TKM callsign genealogy
Currently held by MC MAHAN, THOMAS 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 KN4TKM's current licensee, walking backwards.
- MC MAHAN, THOMAS KNCgranted 2018-04-17cancelled 2018-05-11
Successor callsigns
Callsigns held now by people who previously held KN4TKM.
No current licensee on record previously held this callsign.