Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TSM callsign genealogy
Currently held by COPE II, JOHN R
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 K4TSM's current licensee, walking backwards.
- COPE II, JOHN RGAgranted 2021-02-03cancelled 2021-02-23
Successor callsigns
Callsigns held now by people who previously held K4TSM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4TSM, oldest first.
- Mosley, Timothy S AL2008-09-05 → cancelled 2020-09-09
- COPE II, JOHN R GA2021-02-23 active