Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3KOU callsign genealogy
Currently held by Hayashi, Yasuhiro
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 N3KOU's current licensee, walking backwards.
- Hayashi, YasuhiroMIgranted 2017-10-27cancelled 2017-11-14
Successor callsigns
Callsigns held now by people who previously held N3KOU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3KOU, oldest first.
- HAYASHI, YASUHIRO CA2001-09-20 → cancelled 2013-11-27
- Hayashi, Yasuhiro MI2017-11-14 active