Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3OID callsign genealogy
Currently held by Riggs, William E
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 W3OID's current licensee, walking backwards.
- Riggs, Michael SCAgranted 2017-07-26cancelled 2024-05-03
Successor callsigns
Callsigns held now by people who previously held W3OID.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3OID, oldest first.
- Riggs, William E PA2012-01-07 → cancelled 2024-02-10
- Riggs, Michael S CA2024-05-03 active