Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TKM callsign genealogy
Currently held by MORGAN, TOM 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 K4TKM's current licensee, walking backwards.
- MORGAN, TOM KNCgranted 2012-04-17cancelled 2014-01-03
Successor callsigns
Callsigns held now by people who previously held K4TKM.
- BYERS, BROOK HCAgranted 2025-12-02
All historical holders
Every license row we've seen with the callsign K4TKM, oldest first.
- BYERS, BROOK H CA1997-12-08 → cancelled 2006-01-10
- MORGAN, TOM K NC2023-12-16 active