Skip to content
Ham Radio Callsign Search
Callsign: KO4OOJ Class: Extra Name: Zwierko, Richard C City: Herndon State: VA Zipcode: 20170 Status: Active Grant Date: 03/22/2021 Expires: 03/22/2031 Uls: FCC Info
HamCallsigns.com © 2025
ARRL | QRZ | FCC | ARN | TERMS | PRIVACY | CONTACT