Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MLZ callsign genealogy
Currently held by Jansen, Robert B
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 W4MLZ's current licensee, walking backwards.
- Jansen, Robert BOHgranted 2017-09-21cancelled 2017-10-11
Successor callsigns
Callsigns held now by people who previously held W4MLZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MLZ, oldest first.
- STEVENS, GEORGE W FL1995-02-06 → cancelled 2007-02-07
- Jansen, Robert B OH2017-10-11 active