Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WH6ACK callsign genealogy
Currently held by Dinwiddie, Steven
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 WH6ACK's current licensee, walking backwards.
- Dinwiddie, StevenHIgranted 2021-05-03cancelled 2026-07-28
Successor callsigns
Callsigns held now by people who previously held WH6ACK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WH6ACK, oldest first.
- KAWANISHI, JITSUNIN HI1998-05-08 → cancelled 2010-05-11
- Dinwiddie, Steven HI2026-07-28 active