Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0D callsign genealogy
Currently held by CHANG, HYOK
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 AB0D's current licensee, walking backwards.
- CHANG, HYOKMNgranted 2003-01-13cancelled 2011-10-04
- KD0WVno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AB0D.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB0D, oldest first.
- TIMMONS, HENRY A KS1999-06-28 → cancelled 2011-06-29
- CHANG, HYOK GA2021-08-31 active