Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN4JD callsign genealogy
Currently held by Dubroca, Jan 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 KN4JD's current licensee, walking backwards.
- Dubroca, Jan JGAgranted 2000-01-04cancelled 2002-04-28
Successor callsigns
Callsigns held now by people who previously held KN4JD.
- WILLIAMS, VANCE BVAgranted 2016-10-03