Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WM1MM callsign genealogy
Currently held by McNichols, William M
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 WM1MM's current licensee, walking backwards.
- McNichols, William MTXgranted 2019-08-21cancelled 2019-10-05
Successor callsigns
Callsigns held now by people who previously held WM1MM.
No current licensee on record previously held this callsign.