Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MUS callsign genealogy
Currently held by BRADSHAW SR, WILLIAM E
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 K4MUS's current licensee, walking backwards.
- Castro, Manuel AFLgranted 2017-10-10cancelled 2017-12-27
Successor callsigns
Callsigns held now by people who previously held K4MUS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4MUS, oldest first.
- BRADSHAW SR, WILLIAM E GA1993-01-05 → cancelled 2005-01-06
- Castro, Manuel A FL2017-12-27 active