Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WM4AA callsign genealogy
Currently held by COLLIER, MATTHEW D
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 WM4AA's current licensee, walking backwards.
- COLLIER, MATTHEW DSCgranted 2003-06-18cancelled 2012-08-07
- KD4FGRno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held WM4AA.
No current licensee on record previously held this callsign.