Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ZBA callsign genealogy
Currently held by Warren, Keane O
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 K4ZBA's current licensee, walking backwards.
- Warren, Keane OALgranted 2000-04-13cancelled 2000-08-25
Successor callsigns
Callsigns held now by people who previously held K4ZBA.
No current licensee on record previously held this callsign.