Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4UFO callsign genealogy
Currently held by Heggan, Bruce A
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 KF4UFO's current licensee, walking backwards.
- Heggan, Bruce ANCgranted 2019-02-13cancelled 2025-08-29
Successor callsigns
Callsigns held now by people who previously held KF4UFO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4UFO, oldest first.
- GREEN, MICHAEL J TN2007-07-11 → cancelled 2019-10-05
- Heggan, Bruce A NC2025-08-29 active