MARS - Armed Forces Day (AFD) Crossband Test

 

The Department of Defense will host this year’s Armed Forces Day (AFD) Crossband Test, scheduled for May 10, 2025. This annual event is open to all licensed amateur radio operators and will not impact any public or private communications. For more than 50 years, military and amateur stations have taken part in this event, which is an interoperability exercise between hobbyist and government radio stations.

The AFD Crossband Test is a unique opportunity to test two-way communications between military communicators and radio stations in the Amateur Radio Service (ARS), as authorized in 47 CFR 97.111. These tests provide opportunities and challenges for radio operators to demonstrate individual technical skills in a tightly controlled exercise scenario that does not impact any public or private communications.

Military stations will transmit on selected military frequencies and will announce the specific ARS frequencies monitored. All times are ZULU (Z), and all frequencies are Upper Side Band (USB) unless otherwise noted. The MARS COMEX Schedule is available on the MARS web-site (https://www.dodmars.org/mars-comex-information-website/armed-forces-day)