Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WW7AA callsign genealogy
Currently held by KATSURA, MIYOKO
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 WW7AA's current licensee, walking backwards.
- KATSURA, MIYOKOORgranted 2013-03-08cancelled 2013-11-19
Successor callsigns
Callsigns held now by people who previously held WW7AA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WW7AA, oldest first.
- STEVENSON, JOHN R MN2001-10-30 → cancelled 2013-11-05
- KATSURA, MIYOKO WA2023-09-28 active