Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB1HZ callsign genealogy
Currently held by FORMER OPERATORS OF HZ1AB
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 AB1HZ's current licensee, walking backwards.
- KD9STUcancelledDhahran Amateur Radio Club Of AmericaINgranted 2021-06-01cancelled 2021-06-22
Successor callsigns
Callsigns held now by people who previously held AB1HZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB1HZ, oldest first.
- FORMER OPERATORS OF HZ1AB WY2007-11-28 → cancelled 2019-11-20
- Dhahran Amateur Radio Club Of America IN2021-06-22 active