Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AH0L callsign genealogy
Currently held by Higashino, Kazutaka
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 AH0L's current licensee, walking backwards.
- Tomikawa, ToshioMPgranted 2014-02-25cancelled 2014-04-15
Successor callsigns
Callsigns held now by people who previously held AH0L.
- Higashino, KazutakaMPgranted 2011-02-25cancelled 2018-09-08
All historical holders
Every license row we've seen with the callsign AH0L, oldest first.
- NISHIYAMA, HARUO MP1992-01-21 → cancelled 2004-01-22
- Higashino, Kazutaka MP2007-10-12 → cancelled 2011-02-25
- Tomikawa, Toshio MP2024-07-02 active