Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9MZV callsign genealogy
Currently held by Mertes, Justin M
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 W9MZV's current licensee, walking backwards.
- Mertes, Justin MFLgranted 2026-02-18cancelled 2026-03-10
Successor callsigns
Callsigns held now by people who previously held W9MZV.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9MZV, oldest first.
- MERTES, IVAN M FL2005-11-11 → cancelled 2017-12-13
- Mertes, Justin M FL2026-03-10 active