Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6KDJ callsign genealogy
Currently held by COBB, HAROLD L
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 W6KDJ's current licensee, walking backwards.
- COBB, MATTHEW JCAgranted 1999-01-12cancelled 2000-09-19
Successor callsigns
Callsigns held now by people who previously held W6KDJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6KDJ, oldest first.
- COBB, HAROLD L CA1995-04-26 → cancelled 2000-07-20
- COBB, MATTHEW J CA2020-07-23 active