Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB7WOW callsign genealogy
Currently held by CLARKSON, JAMES D
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 KB7WOW's current licensee, walking backwards.
- Arnold, Catherine AORgranted 2022-05-11cancelled 2022-06-07
Successor callsigns
Callsigns held now by people who previously held KB7WOW.
- Clarkson Dr, James DMIgranted 2021-10-19
All historical holders
Every license row we've seen with the callsign KB7WOW, oldest first.
- CLARKSON, JAMES D AZ1993-08-24 → cancelled 2000-09-12
- Arnold, Catherine A OR2022-06-07 active