Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4GJJ callsign genealogy
Currently held by Boston, Joseph K
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 KD4GJJ's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KD4GJJ.
- Boston, Joseph KFLgranted 2005-07-19cancelled 2017-07-20