Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WM0M callsign genealogy
Currently held by HALTON, LARRY
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 WM0M's current licensee, walking backwards.
- Johnson, Matthew RILgranted 2025-03-22cancelled 2025-05-28
Successor callsigns
Callsigns held now by people who previously held WM0M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WM0M, oldest first.
- HALTON, LARRY ND2013-03-08 → cancelled 2025-04-01
- Johnson, Matthew R IL2025-05-28 active