Confidence: Medium · Source: FCC ULS · As of 2026-10-24
KR4PBZ callsign genealogy
Currently held by Warren, Phillip 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 KR4PBZ's current licensee, walking backwards.
- Warren, Phillip JFLgranted 2019-04-04cancelled 2026-09-21
Successor callsigns
Callsigns held now by people who previously held KR4PBZ.
No current licensee on record previously held this callsign.