Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4HRT callsign genealogy
Currently held by ACKER, WILBUR H
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 N4HRT's current licensee, walking backwards.
- RIDDELL, JAMIE LKYgranted 2023-04-11cancelled 2025-02-19
Successor callsigns
Callsigns held now by people who previously held N4HRT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4HRT, oldest first.
- ACKER, WILBUR H FL2004-03-01 → cancelled 2016-05-25
- RIDDELL, JAMIE L KY2025-02-19 active