Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NA8O callsign genealogy
Currently held by KOBAYASHI, NAOYUKI
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 NA8O's current licensee, walking backwards.
- KOBAYASHI, NAOYUKINYgranted 2002-11-18cancelled 2003-01-14
Successor callsigns
Callsigns held now by people who previously held NA8O.
- PAGE, JOHN MOHgranted 2010-09-25cancelled 2022-12-09
All historical holders
Every license row we've seen with the callsign NA8O, oldest first.
- PAGE, JOHN M OH1996-02-16 → cancelled 2000-12-08
- KOBAYASHI, NAOYUKI CA2022-10-18 active