Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4USY callsign genealogy
Currently held by MIGNONE, WILLIAM F
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 KF4USY's current licensee, walking backwards.
- MIGNONE, WILLIAM Fcancelled 1997-11-19
Successor callsigns
Callsigns held now by people who previously held KF4USY.
No current licensee on record previously held this callsign.