Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4KYW callsign genealogy
Currently held by KOWALCHUK, ALEX M
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 W4KYW's current licensee, walking backwards.
- KOWALCHUK, ALEX MGAgranted 2018-11-07cancelled 2018-11-27
Successor callsigns
Callsigns held now by people who previously held W4KYW.
- KOWALCHUK, ALEX MGAgranted 2021-03-19
All historical holders
Every license row we've seen with the callsign W4KYW, oldest first.
- BOSTROM, GORDON E GA2002-01-17 → cancelled 2014-03-04
- KOWALCHUK, ALEX M GA2018-11-27 → cancelled 2021-03-19