Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4CPA callsign genealogy
Currently held by Darnell, John 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 KB4CPA's current licensee, walking backwards.
- Darnell, John OALgranted 2013-07-08cancelled 2013-08-20
Successor callsigns
Callsigns held now by people who previously held KB4CPA.
No current licensee on record previously held this callsign.