Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WM1B callsign genealogy
Currently held by FREDRICKSON, SUSAN E
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 WM1B's current licensee, walking backwards.
- Boyles, William PNCgranted 2026-04-03cancelled 2026-04-25
Successor callsigns
Callsigns held now by people who previously held WM1B.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WM1B, oldest first.
- FREDRICKSON, SUSAN E CT2002-02-20 → cancelled 2014-02-21
- FANT, DAVID L MA2014-03-11 → cancelled 2026-03-12
- Boyles, William P NC2026-04-25 active