Skip to content
Ham Radio Callsign Search
Callsign: KO4UDR Class: Technician Name: Arduino, Frank J City: Louisville State: KY Zipcode: 40220 Status: Active Grant Date: 10/19/2021 Expires: 10/19/2031 Uls: FCC Info
HamCallsigns.com © 2025
ARRL | QRZ | FCC | ARN | TERMS | PRIVACY | CONTACT