Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JRK callsign genealogy
Currently held by Jims Excellent Radio Klub
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 K4JRK's current licensee, walking backwards.
- KQ4THNcancelledJims Excellent Radio KlubFLgranted 2024-06-26cancelled 2024-07-26
Successor callsigns
Callsigns held now by people who previously held K4JRK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JRK, oldest first.
- Kelley, Jeffery R GA2010-01-28 → cancelled 2022-02-02
- Jims Excellent Radio Klub FL2024-07-26 active