Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU4VV callsign genealogy
Currently held by MC MASTER, WILLIAM N
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 KU4VV's current licensee, walking backwards.
- MC MASTER, WILLIAM Ncancelled 1998-10-27
Successor callsigns
Callsigns held now by people who previously held KU4VV.
- McMaster, William NSCgranted 2023-12-20