Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4IZM callsign genealogy
Currently held by SPINNEY, PARK S
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 N4IZM's current licensee, walking backwards.
- SPINNEY, PARK SGAgranted 2021-11-16cancelled 2026-04-10
Successor callsigns
Callsigns held now by people who previously held N4IZM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4IZM, oldest first.
- METZGER, MAURICE D NC2013-01-07 → cancelled 2025-03-18
- SPINNEY, PARK S GA2026-04-10 active