Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WH6CZ callsign genealogy
Currently held by ITOKAZU, WAYNE S
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 WH6CZ's current licensee, walking backwards.
- Sumitani, Michael SHIgranted 2016-06-08cancelled 2016-12-03
Successor callsigns
Callsigns held now by people who previously held WH6CZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WH6CZ, oldest first.
- ITOKAZU, WAYNE S NM2001-07-25 → cancelled 2013-11-05
- Sumitani, Michael S HI2016-12-03 active