Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4FBX callsign genealogy
Currently held by SFL CW CONTESTERS
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 KR4FBX's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KR4FBX.
- WX4CWactiveSFL CW CONTESTERSFLgranted 2025-07-29