Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7JDB callsign genealogy
Currently held by Buck, John 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 K7JDB's current licensee, walking backwards.
- Buck, John DAZgranted 2010-04-23cancelled 2012-09-14
Successor callsigns
Callsigns held now by people who previously held K7JDB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7JDB, oldest first.
- BRADLEY, JAMES D WA1998-02-26 → cancelled 2010-02-27
- Buck, John D AZ2022-08-10 active