Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ACU callsign genealogy
Currently held by MANESS, LEO 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 K4ACU's current licensee, walking backwards.
- Hilburn, James MGAgranted 2020-07-13cancelled 2020-09-19
Successor callsigns
Callsigns held now by people who previously held K4ACU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ACU, oldest first.
- MANESS, LEO F FL2004-08-31 → cancelled 2016-11-16
- Hilburn, James M KY2020-09-19 active