Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD2NBJ callsign genealogy
Currently held by Butler, John W
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 KD2NBJ's current licensee, walking backwards.
- Butler, John WNJgranted 2016-01-28cancelled 2016-03-18
Successor callsigns
Callsigns held now by people who previously held KD2NBJ.
No current licensee on record previously held this callsign.