What is ham radio EMCOMM?
EMCOMM is short for emergency communications. In amateur radio, it means licensed operators using their stations, skills and training to pass messages when normal communication is disrupted or overloaded. That might be a power outage that takes down cell towers, a severe storm, a wildfire, or a planned public event that needs extra communication support.
Amateur radio is often used this way because hams can operate on their own equipment, frequently on battery or generator power, and many can communicate without relying on phone lines or the internet. Repeaters, simplex radio and HF all play a part, and which one is useful depends on the distance and the situation.
It helps to be realistic about the role. Ham operators generally support served agencies and community groups rather than replacing professional responders. Most EMCOMM work is quiet: checking into nets, relaying health-and-welfare traffic, supporting a shelter, or reporting conditions when asked.
Organizations hams commonly join
Several groups are associated with emergency communications. Names, structure and requirements vary by country and by local area, so treat the descriptions below as general and confirm details with your local group.
ARES
The Amateur Radio Emergency Service is a program of the ARRL in the United States. Licensed amateurs volunteer their time and equipment, and members are usually organized by county or local area under an Emergency Coordinator. Membership is generally open to licensed hams.
RACES
The Radio Amateur Civil Emergency Service is tied to government emergency management. It is typically organized through a local or state emergency management agency, and members often have to register with that agency. Many hams belong to both ARES and RACES.
CERT
Community Emergency Response Teams are not amateur radio groups. They train community volunteers in basic disaster response. Many hams take CERT training because it teaches how responders organize and work safely.
SKYWARN
SKYWARN is a National Weather Service program for trained severe weather spotters, and many spotters are hams. Our guide to ham radio SKYWARN and storm spotting covers how it works.
Other groups
Some areas also have Red Cross support, SATERN (Salvation Army), hospital or public-health volunteer groups, and local club-run nets. Some regions also use the term auxiliary communications. See auxiliary communications and what ARCS means for how that term is used.
Getting started
You do not need an expensive station to begin. A typical path looks like this.
- Get licensed. Operators generally need an amateur license in their country. In the United States, the entry-level Technician license (see the Technician study guide) gives access to VHF and UHF, which is where most local EMCOMM happens.
- Get a reliable handheld or mobile radio. A dual-band radio programmed with local repeaters and simplex channels is a common first step.
- Join a local group. Ask your local club or find the ARES coordinator for your county. Groups often hold regular nets and meetings.
- Take training. The ARRL offers online emergency communications courses, and some groups offer classroom sessions. Introductory FEMA Incident Command System courses are commonly encouraged, though what a group requires differs from place to place.
- Practice. Take part in nets, drills and public-service events so the procedures are familiar before they are needed.
Skills that matter most
- Clear, brief communication. Plain language, accurate message-passing and good net discipline matter more than fancy equipment, and good repeater etiquette carries over directly to nets.
- Knowing your frequencies. Learn your local repeaters, backup simplex channels and any plans your group uses. Our list of ham radio emergency frequencies is a starting point.
- Power planning. Know how long your batteries last, and have a way to recharge them.
- Written logs. Keep a log of messages sent and received.
- Staying safe. Responding to an emergency means looking after yourself first. Do not put yourself in danger to make a transmission.
Basic gear to consider
Equipment will depend on your role, but common items include a dual-band handheld, a spare battery pack, a better antenna than the stock one, a notepad and pencils, a copy of your license, a printed frequency list, a flashlight, and a small power source. Many operators also keep a “go bag” ready. For the preparedness angle, see ham radio for survival and preparedness.
Common questions
Will an EMP destroy a ham radio?
Nobody can say for certain, because the effects of an electromagnetic pulse would depend heavily on the event and the equipment. Some operators store spare radios in metal containers as a precaution, but the benefit is debated. Treat claims in either direction with caution.
How far can a ham radio communicate?
It depends on the band, antenna, power and conditions. Handhelds on VHF/UHF are typically local, repeaters extend that range, and HF can sometimes reach across continents or farther under good conditions.
Is EMCOMM the same as being a first responder?
No. EMCOMM volunteers support communications. They generally follow the direction of the organization they are serving and are not expected to act as emergency responders.
Keep it simple
Emergency communications is mostly about preparation and practice. Getting licensed, joining a local group and taking part in nets will help you become useful long before an emergency happens.