Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7WYM callsign genealogy
Currently held by Sugawara, Jo
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 W7WYM's current licensee, walking backwards.
- Sugawara, JoCAgranted 2015-09-01cancelled 2015-09-29
Successor callsigns
Callsigns held now by people who previously held W7WYM.
- Sugawara, JoFLgranted 2016-08-02