Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MIB callsign genealogy
Currently held by Schumer, John A
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 W4MIB's current licensee, walking backwards.
- Schumer, John AFLgranted 2020-10-21cancelled 2021-03-19
Successor callsigns
Callsigns held now by people who previously held W4MIB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MIB, oldest first.
- MORAN, WILLIAM M VA1998-05-12 → cancelled 2010-05-13
- Schumer, John A FL2021-03-19 active