Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7YZ callsign genealogy
Currently held by Campbell Sr, James F
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 K7YZ's current licensee, walking backwards.
- THORNTON, GREGORY AUTgranted 2021-03-09cancelled 2021-05-04
Successor callsigns
Callsigns held now by people who previously held K7YZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7YZ, oldest first.
- GREYELL, ROBERT A WA1997-10-15 → cancelled 2007-03-02
- Campbell Sr, James F WA2009-04-14 → cancelled 2021-04-15
- THORNTON, GREGORY A UT2021-05-04 active