Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4ZFM callsign genealogy
Currently held by TURNER, ROBERT E
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 N4ZFM's current licensee, walking backwards.
- Turner JR, RobertSCgranted 2024-06-15cancelled 2024-07-06
Successor callsigns
Callsigns held now by people who previously held N4ZFM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4ZFM, oldest first.
- TURNER, ROBERT E FL2010-12-20 → cancelled 2023-01-31
- Turner JR, Robert SC2024-07-06 active