Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7GBI callsign genealogy
Currently held by ARIZONA MICROWAVE USERS GROUP
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 W7GBI's current licensee, walking backwards.
- KF7CYCcancelledArizona Microwave Users GroupAZgranted 2009-06-03cancelled 2009-07-07
Successor callsigns
Callsigns held now by people who previously held W7GBI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7GBI, oldest first.
- JUSTINAK, CHARLES A AZ1998-06-11 → cancelled 2008-02-12
- ARIZONA MICROWAVE USERS GROUP AZ2019-06-13 active