Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MJF callsign genealogy
Currently held by FINCKBONE, MICHAEL 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 W4MJF's current licensee, walking backwards.
- FINCKBONE, MICHAEL JFLgranted 2011-05-12cancelled 2015-01-03
Successor callsigns
Callsigns held now by people who previously held W4MJF.
- FRIOLET, MICHAEL JFLgranted 2017-12-13
All historical holders
Every license row we've seen with the callsign W4MJF, oldest first.
- Friolet, Michael J FL2006-02-14 → cancelled 2008-02-20
- FINCKBONE, MICHAEL J FL2015-01-03 active