Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4ZAZ callsign genealogy
Currently held by Graham, Dale L
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 KO4ZAZ's current licensee, walking backwards.
- Graham, Dale LGAgranted 2006-01-19cancelled 2006-02-11
Successor callsigns
Callsigns held now by people who previously held KO4ZAZ.
No current licensee on record previously held this callsign.