Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD6CHP callsign genealogy
Currently held by CALIFORNIA HIGHWAY PATROL WEST VALLEY EMERGENCY RADIO SERVICE
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 WD6CHP's current licensee, walking backwards.
- KM6EGWcancelledCALIFORNIA HIGHWAY PATROL WEST VALLEY EMERGENCY RADIO SERVICECAgranted 2016-07-22cancelled 2016-08-19
Successor callsigns
Callsigns held now by people who previously held WD6CHP.
- Graham, Rorick LCAgranted 2017-03-01
All historical holders
Every license row we've seen with the callsign WD6CHP, oldest first.
- GRAHAM, RORICK L CA1997-05-28 → cancelled 2000-06-14
- CALIFORNIA HIGHWAY PATROL WEST VALLEY EMERGENCY RADIO SERVICE CA2016-08-19 active