Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9ZAZ callsign genealogy
Currently held by Harris, Robert J
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 K9ZAZ's current licensee, walking backwards.
- Harris, Robert JILgranted 2014-05-01cancelled 2018-02-21
Successor callsigns
Callsigns held now by people who previously held K9ZAZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9ZAZ, oldest first.
- O HARA, ANDREW J IL1998-09-11 → cancelled 2007-03-29
- Harris, Robert J IL2018-02-21 active