Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4JN callsign genealogy
Currently held by DOUGLASS JR, EARL B
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 KK4JN's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KK4JN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK4JN, oldest first.
- DOUGLASS JR, EARL B FL2006-12-29 → cancelled 2019-02-12
- Nelson, John S TN2022-02-23 active