Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4KBC callsign genealogy
Currently held by CULLINAN, WILLIAM J
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 KB4KBC's current licensee, walking backwards.
- CULLINAN, WILLIAM JGAgranted 2019-10-18cancelled 2019-11-08
Successor callsigns
Callsigns held now by people who previously held KB4KBC.
No current licensee on record previously held this callsign.