Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF4WYX callsign genealogy
Currently held by F3 INC
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 KF4WYX'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 KF4WYX.
- K4TFIexpiredF3 INCTNgranted 2013-06-08cancelled 2025-06-10