Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9ZC callsign genealogy
Currently held by Hartline, David A
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 AB9ZC's current licensee, walking backwards.
- Hartline, David AILgranted 2010-09-08cancelled 2011-05-02
Successor callsigns
Callsigns held now by people who previously held AB9ZC.
No current licensee on record previously held this callsign.