Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA9ZZZ callsign genealogy
Currently held by Robinson, William P
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 KA9ZZZ's current licensee, walking backwards.
- Robinson, William PGAgranted 2024-03-05cancelled 2024-04-05
Successor callsigns
Callsigns held now by people who previously held KA9ZZZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA9ZZZ, oldest first.
- WARNER, ROBERT L IN1998-01-12 → cancelled 2010-01-13
- Robinson, William P GA2024-04-05 active