Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NW9M callsign genealogy
Currently held by WHITE, MARK B
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 NW9M's current licensee, walking backwards.
- WHITE, MARK BILgranted 1992-02-11cancelled 2000-06-20
- KB9GRUno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held NW9M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NW9M, oldest first.
- LARSEN, RICHARD C WI1988-01-12 → cancelled 2000-01-13
- WHITE, MARK B IL2021-03-12 active