Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA7RAT callsign genealogy
Currently held by CALIFORNIA ARIZONA RIVER RAT RADIO AMATEURS
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 WA7RAT's current licensee, walking backwards.
- KJ7BAPcancelledCALIFORNIA ARIZONA RIVER RAT RADIO AMATEURSAZgranted 2018-10-11cancelled 2018-10-30
Successor callsigns
Callsigns held now by people who previously held WA7RAT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA7RAT, oldest first.
- CALIFORNIA ARIZONA RIVER RAT RADIO AMATEURS AZ2007-11-10 → cancelled 2018-07-03
- CALIFORNIA ARIZONA RIVER RAT RADIO AMATEURS AZ2018-10-30 active