Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0ADG callsign genealogy
Currently held by HARELSON, WILLIAM H
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 K0ADG's current licensee, walking backwards.
- SOBRERO, ADRIANCAgranted 2021-09-22cancelled 2024-01-17
Successor callsigns
Callsigns held now by people who previously held K0ADG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0ADG, oldest first.
- HARELSON, WILLIAM H CO1995-12-01 → cancelled 2007-12-04
- SOBRERO, ADRIAN CA2024-01-17 active