Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4ZUA callsign genealogy
Currently held by Parker, David 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 N4ZUA's current licensee, walking backwards.
- Parker, David LSCgranted 2024-12-18cancelled 2025-09-06
Successor callsigns
Callsigns held now by people who previously held N4ZUA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4ZUA, oldest first.
- JOHNSON, ROY FL2012-07-25 → cancelled 2024-09-17
- Parker, David L SC2025-09-06 active