Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4EM callsign genealogy
Currently held by WELLEN III, ROBERT J
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 KZ4EM's current licensee, walking backwards.
- WELLEN III, ROBERT JFLgranted 2023-11-28cancelled 2024-02-23
Successor callsigns
Callsigns held now by people who previously held KZ4EM.
No current licensee on record previously held this callsign.