Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4DOO callsign genealogy
Currently held by DUNCAN, EARLE 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 KJ4DOO's current licensee, walking backwards.
- Duncan, Earle JGAgranted 2004-03-09cancelled 2008-04-23
Successor callsigns
Callsigns held now by people who previously held KJ4DOO.
No current licensee on record previously held this callsign.