Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MAZ callsign genealogy
Currently held by Reid, Charles
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 W4MAZ's current licensee, walking backwards.
- COWAN JR, WILLIAM RGAgranted 2023-03-30cancelled 2023-04-21
Successor callsigns
Callsigns held now by people who previously held W4MAZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MAZ, oldest first.
- Reid, Charles FL2011-01-13 → cancelled 2023-03-28
- COWAN JR, WILLIAM R GA2023-04-21 active