Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WK7X callsign genealogy
Currently held by KNUTSEN, JOHN A
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 WK7X's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WK7X.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WK7X, oldest first.
- KNUTSEN, JOHN A WA1997-11-11 → cancelled 2003-02-10
- CLARK, WILLIAM K CO2017-03-01 active