Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4JDB callsign genealogy
Currently held by BROWN, JEFFREY D
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 KN4JDB's current licensee, walking backwards.
- BROWN, JEFFREY DGAgranted 2017-10-26cancelled 2017-11-14
Successor callsigns
Callsigns held now by people who previously held KN4JDB.
No current licensee on record previously held this callsign.