Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MPA callsign genealogy
Currently held by C., Sean
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 W4MPA's current licensee, walking backwards.
- C., SeanORgranted 2013-09-05cancelled 2015-12-19
Successor callsigns
Callsigns held now by people who previously held W4MPA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MPA, oldest first.
- BINGER, KAYE FL1997-11-20 → cancelled 2009-11-21
- C., Sean OR2025-11-29 active