Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3ADV callsign genealogy
Currently held by De Alva, Chad 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 W3ADV's current licensee, walking backwards.
- De Alva, Chad Lazgranted 2014-12-11cancelled 2015-01-06
Successor callsigns
Callsigns held now by people who previously held W3ADV.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3ADV, oldest first.
- SHAW, FREDWOOD S PA1988-05-24 → cancelled 2000-05-25
- De Alva, Chad L AZ2024-12-04 active