Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD7YS callsign genealogy
Currently held by Yokoyama, Atsushi
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 AD7YS's current licensee, walking backwards.
- Yokoyama, AtsushiORgranted 2008-12-16cancelled 2009-03-05
Successor callsigns
Callsigns held now by people who previously held AD7YS.
No current licensee on record previously held this callsign.