Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7KKZ callsign genealogy
Currently held by OLSON, KEITH B
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 K7KKZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K7KKZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7KKZ, oldest first.
- Thomas, Matthew OR2010-05-08 → cancelled 2022-05-10
- OLSON, KEITH B UT2024-09-13 active