Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4DBK callsign genealogy
Currently held by SWEENEY, JAMES E
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 KJ4DBK's current licensee, walking backwards.
- SWEENEY, JAMES ENCgranted 2007-01-30cancelled 2008-04-02
Successor callsigns
Callsigns held now by people who previously held KJ4DBK.
- SWEENEY, JAMES ENCgranted 2017-07-25