Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4EW callsign genealogy
Currently held by TRYZBIAK, SID 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 KN4EW's current licensee, walking backwards.
- TRYZBIAK, SID RFLgranted 2017-12-12cancelled 2025-09-12
Successor callsigns
Callsigns held now by people who previously held KN4EW.
- TRYZBIAK, SID RFLgranted 2017-12-12cancelled 2025-09-12
All historical holders
Every license row we've seen with the callsign KN4EW, oldest first.
- TRYZBIAK, SID R OK2010-01-26 → cancelled 2017-12-12
- TRYZBIAK, SID R OK2025-09-12 active