Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W8JPK callsign genealogy
Currently held by SEKIGUCHI, TOSHIKAZU
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 W8JPK's current licensee, walking backwards.
- Sekiguchi, ToshikazuWAgranted 2007-01-26cancelled 2007-02-21
Successor callsigns
Callsigns held now by people who previously held W8JPK.
No current licensee on record previously held this callsign.