Confidence: Medium · Source: FCC ULS · As of 2026-11-05
KN4H callsign genealogy
Currently held by Kruszewski SR, Buck R
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 KN4H's current licensee, walking backwards.
- Kruszewski SR, Buck RALgranted 2026-10-20
Successor callsigns
Callsigns held now by people who previously held KN4H.
- Kruszewski SR, Buck RALgranted 2026-10-20
All historical holders
Every license row we've seen with the callsign KN4H, oldest first.
- Thrash Jr, Kenneth M GA2014-03-10 → cancelled 2026-06-02
- Kruszewski SR, Buck R AL2026-06-19 → cancelled 2026-10-20