Confidence: Medium · Source: FCC ULS · As of 2026-09-10
KB4CPU callsign genealogy
Currently held by KNOLL, BRIAN F
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 KB4CPU's current licensee, walking backwards.
- KNOLL, BRIAN FNCgranted 2023-04-05cancelled 2023-04-28
Successor callsigns
Callsigns held now by people who previously held KB4CPU.
- KNOLL, BRIAN FNCgranted 2023-04-28cancelled 2023-05-31