Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF4YU callsign genealogy
Currently held by Allen, Gary L
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 KF4YU's current licensee, walking backwards.
- ALLEN, GARY LFLgranted 1998-09-02cancelled 2008-03-11
Successor callsigns
Callsigns held now by people who previously held KF4YU.
No current licensee on record previously held this callsign.