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SHAred RESources (SHARES) High Frequency (HF) Radio Program

The SHAred RESources (SHARES) High Frequency (HF) Radio program provides an additional means for users with a national security and emergency preparedness mission to communicate when landline and cellular communications are unavailable. SHARES members use existing HF radio resources to coordinate and transmit messages needed to perform critical functions, including those areas related to leadership, safety, maintenance of law and order, finance, and public health.

SHARES Program Information

National security and emergency preparedness (NS/EP) personnel need to transmit critical messages to coordinate emergency operations even when traditional means of communicating via landlines and cellphones are damaged or destroyed. The SHAred RESources (SHARES) High Frequency (HF) Radio Program, administered by the Department of Homeland Security’s (DHS) National Coordinating Center for Communications (NCC), provides an additional means for users with a NS/EP mission to communicate when landline and cellular communications are unavailable.

SHARES members use existing HF radio resources of government, critical infrastructure, and disaster response organizations to coordinate and transmit emergency messages. SHARES users rely on HF radio communications to perform critical functions, including those areas related to leadership, safety, maintenance of law and order, finance, and public health. This program also provides the emergency response community with a single interagency emergency message handling and frequency sharing system. SHARES promotes interoperability between HF radio systems and promotes awareness of applicable regulatory, procedural, and technical issues.

More than 3,290 HF radio stations—representing over 590 federal, state, and industry organizations located in all 50 states, the District of Columbia, and several locations overseas—are resource contributors to the SHARES HF Radio Program. Nearly 500 emergency planning and response personnel participate in SHARES. Approximately 200 HF radio channels are available for use by SHARES members.

Membership in the SHARES program is voluntary. SHARES is available on a 24-hour basis and requires no prior coordination or activation to transmit messages. Members consult the SHARES Handbook to find stations, frequencies and/or Automatic Link Establishment (ALE) addresses of participating organizations they need to communicate/coordinate with. Participating SHARES HF radio stations accept and relay messages until a receiving station is able to deliver the message to the intended recipient.

For additional information, reference the SHARES publications library. For more information, please contact the SHARES Program Office via the SHARES Customer Service Request (CSR)

SHARES Resources

Accessing SHARES

SHARES provides an emergency communications link to support intra/interagency mission requirements on a 24-hour basis. The use of SHARES requires no prior coordination or activation to transmit messages. The flag word "SHARES" is all that is needed to get the message through.

SHARES FAQs

Frequently asked questions about the SHAred RESources (SHARES) High Frequency (HF) Radio Program.

SHARES Coordination Network Operational Levels

Operational Levels are designed to improve the responsiveness of the SHARES Coordination Network during emergencies.

SHARES Interference Report

EXTERNAL
A copy of the SHARES Radio Interference Form can be downloaded from the SHARES publications library.
Shares Documents

SHARES Documents

OCT 04, 2021 | PUBLICATION
A collection of documents and forms related to the SHAred RESources (SHARES) High Frequency (HF) Radio Program.
View Files

Resilient Power Working Group

Resilient Power Working Group (RPWG)'s best practices provide emergency and continuity managers with information to increase the resilience of backup and emergency power systems during all durations of power outages.

Contact

If you have any questions or would like further information on the SHAred RESources (SHARES) High Frequency (HF) Radio Program, you may contact us in one of the following ways:

Primarily, please contact the SHARES Program Office via the SHARES Customer Service Request (CSR)

Email: shares@cisa.dhs.gov

Phone:
703-235-5329 (Monday - Friday, 8:00 a.m. - 5:00 p.m. EST, and when activated for emergency communications)
703-235-5080 (24/7 use when the office is not staffed)

Mailing Address:
SHARES HF Radio Program
Department of Homeland Security
National Coordinating Center for Communications
Mailstop 0645
245 Murray Lane SW
Washington, DC 20598-0645

SHARES Customer Service Request (CSR)

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