Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7KOS callsign genealogy
Currently held by SWANSON, KENNETH O
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 K7KOS's current licensee, walking backwards.
- ZALEWSKA, MAJANVgranted 2020-12-07cancelled 2020-12-29
Successor callsigns
Callsigns held now by people who previously held K7KOS.
- SWANSON, KENNETH ONVgranted 2024-10-26
All historical holders
Every license row we've seen with the callsign K7KOS, oldest first.
- SWANSON, KENNETH O NV2004-09-17 → cancelled 2004-11-26
- Zalewska, Maja MT2020-12-29 active