Confidence: Medium · Source: FCC ULS · As of 2026-09-16
KK4ZBU callsign genealogy
Currently held by Santos Mr., George L
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 KK4ZBU's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KK4ZBU.
- Santos 412, George LFLgranted 2014-05-28cancelled 2026-05-29