Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MFL callsign genealogy
Currently held by MENSING, JOHN K
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 W4MFL's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4MFL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MFL, oldest first.
- MENSING, JOHN K FL1995-03-30 → cancelled 2007-03-31
- LARSEN, MIGUEL F SC2025-03-29 active