Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU4L callsign genealogy
Currently held by DESIDERIO, ROBERT J
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 KU4L's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KU4L.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KU4L, oldest first.
- DESIDERIO, ROBERT J FL2004-07-29 → cancelled 2016-10-25
- HENDERSON, BRIAN M SC2026-09-11 active