Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO7X callsign genealogy
Currently held by Desertico Contest Club
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 KO7X's current licensee, walking backwards.
- Kenison, MattWAgranted 2020-06-01cancelled 2020-11-13
Successor callsigns
Callsigns held now by people who previously held KO7X.
- WF7XactiveGB Radio ClubAZgranted 2018-10-23
All historical holders
Every license row we've seen with the callsign KO7X, oldest first.
- BRUBAKER, ALAN A WY2006-10-07 → cancelled 2015-08-15
- Desertico Contest Club AZ2017-09-06 → cancelled 2018-10-23
- Kenison, Matt WA2020-11-13 active