Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MOM callsign genealogy
Currently held by WILFERT, DONALD F
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 W4MOM's current licensee, walking backwards.
- Kroemer, Kathryn MFLgranted 2005-08-16cancelled 2006-03-03
Successor callsigns
Callsigns held now by people who previously held W4MOM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MOM, oldest first.
- WILFERT, DONALD F FL1997-01-21 → cancelled 2003-02-14
- Kroemer, Kathryn M IN2016-04-02 active