Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9ZA callsign genealogy
Currently held by GREGORY, MARK D
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 AB9ZA's current licensee, walking backwards.
- GREGORY, MARK DINgranted 2011-02-23cancelled 2011-04-27
Successor callsigns
Callsigns held now by people who previously held AB9ZA.
No current licensee on record previously held this callsign.