Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4NBU callsign genealogy
Currently held by Christman IV, William T
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 KK4NBU's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KK4NBU.
- Christman IV, William TKYgranted 2012-12-06cancelled 2015-01-27