Providing the reins of command - in emergencies.
                                               - USAF MARS Mission

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The Military Auxiliary Radio System (MARS) - formerly the Military Affiliate Radio System - is a Department of Defense (DOD) sponsored program, established as separate managed and operated programs by the Army, Navy, and Air Force. The program consists of licensed amateur radio operators who are interested in military communications. They contribute to the MARS mission providing auxiliary or emergency communications on a local, national, and international basis as an adjunct to normal communications. The MARS program is authorized under DOD Instruction 4650.02.


Eligibility for Membership in Air Force MARS

The applicant must:

  • Be 18 years of age or older.
  • Be a United States citizen or resident alien.
  • Possess a valid amateur radio license issues by the Federal Communications Commission
  • Operational digital capability using either TNC or soundcard. Currently USAF MARS main mode is M110A. Other modes used are  PACTOR I,2,3,4 and the several computer sound card modes, MFSK16, Olivia and MT 63 are most common.
  • Possess an operational HF station capable of operating SSB on at least two of the USAF MARS HF frequencies assigned to Region V.
  • All new members must have equipment that meets a frequency stability of +/- 20 Hz prior to joining AF MARS. Current FCC type accepted amateur equipment and NITA compliant equipment meet these specifications. All VHF radio equipment must be narroww band FM and have a channel spacing of 12.5 kHz (or less).
  • Must not join or belong to more than one MARS service at the same time.
  • Agree to operate in accordance with the MARS rules and regulations
  • Participate a minimum of 12 hours participation per calendar quarter.
  • Successfully complete a training program designed to acquaint the member with military communication procedure.

Benefits of MARS Membership

  • Add to the enjoyment of your amateur radio hobby through the expanded horizon of MARS.
  • Become part of the worldwide military and DoD communications system.
  • Increase your communications skills and capabilities.
  • Selected FREE correspondence courses in communications and electronics subjects (after six months)
  • Operate on specially assigned military radio frequencies in voice and digital modes of communications.
  • Join a group of dedicated fellow radio amateurs participating in meaningful public service.
  • Gain a feeling of being associated with a mission which contributes to the welfare and preparedness of the nation.
  • Participate in regulated, disciplined radio nets with structured lines of organization and very specific operating rules.

Typical MARS Operations and Frequencies

MARS members stations meet periodically in scheduled networks on military frequencies outside of the amateur bands. There are various types of networks and each accomplishes a specific goal. For example, administrative networks to take care of much of the day-to-day management of the program; traffic networks which exist solely to pass third party traffic; and of course, emergency networks which are established to provide for communication needs during periods of emergency. There are also technical nets and training nets. MARS nets operate in different modes. Although high frequency (HF) single sideband (SSB) voice is predominant, there are PSK31, VHF, PACKET, and other digital modes.

MARS networks operate on frequencies assigned to the U.S. military. These frequencies are often far removed from the Amateur bands. Most commercially available equipment must be modified to transmit on these frequencies. Information and guidance on making modifications to many commercially available units is available to licensed MARS operators. Region 5 MARS activities are normally conducted on frequencies near 3.3 MHz, 4.5 MHz, 5.3Mhz and 7.3 MHz. The primary operating mode will be USB. Primary digital mode is M110A. Also, various digital modes such as MFSK16, MT63 and Olivia may also be used.

How to Join MARS

To join USAF MARS in Region V complete the electronic application form found in the menu above or send a request for application forms to:

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
or,  (Conventional mail)
David P. Stapchuk 
Chief Air Force MARS
203 W LOSEY ST RM 1200
SCOTT AFB IL 62225-5222

Member Login

Registration and verification is required to access non-public areas of this site. Enter your GENERIC, not your billet, MARS call-sign in all caps and password to log in or use the Sign Up link below to create an account. --- AFTER REGISTRATION SEND GORDIE, AFA5GT, AN EMAIL AT SO THAT YOU CAN BE AUTHORIZED. I DO NOT GET A NOTIFICATION WHEN SOMEONE REGISTERS!!!! IT'S UP TO YOU TO NOTIFY ME!!!--- Problems with registration or log in? Click HELP in the menu above.

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