Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4XR callsign genealogy
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 KR4XR's current licensee, walking backwards.
- JOY, CHARLESNCgranted 2024-03-05cancelled 2024-05-11
Successor callsigns
Callsigns held now by people who previously held KR4XR.
- BAECHTEL, FRANK SVAgranted 1998-06-18cancelled 2000-07-24
All historical holders
Every license row we've seen with the callsign KR4XR, oldest first.
- JOY, CHARLES NC2024-05-11 active
- —— → cancelled 1998-06-18