Immediate rule
Call the local emergency number when service is available. Send concise location-and-condition messages; maintain an offline contact plan and at least one independent information channel such as a battery radio.
1. CHECK SAFETY2. CALL / TEXT3. RADIO4. SATELLITE SOS5. VISIBLE SIGNAL
Quick-reference sequence. Immediate threats, official orders, and professional medical advice take precedence.
Five practical skills
Establish a family contact protocol
Rule: A simple message and meeting plan prevents duplicated searches and missed contacts.
- Write down emergency numbers, two meeting locations, one out-of-area contact, important medical needs, and the route each person is most likely to use.
- Agree on scheduled check-in windows instead of continuously calling. Include what to do if someone is late or unreachable.
- Use a consistent short report: “WHO; WHERE (coordinates or landmark); CONDITION; HAZARD; ACTION NEEDED; TIME.”
- Make durable paper copies for a wallet/go-bag and provide a copy to the out-of-area contact.
- Agree on a no-signal procedure: safe shelter point and time to reassess, without encouraging unsafe travel.
Send low-bandwidth phone messages
Rule: Use voice for emergencies when available; for family check-ins, SMS may work when voice is congested.
- Call the correct local emergency number for immediate danger. Give your location first and follow the dispatcher instructions.
- Try short standard SMS if calls cannot connect. Keep messages factual, timestamped and location-specific.
- Dim screens, enable battery saver, close intensive apps, and keep a power bank and suitable cable in your kit.
- Check for actual cellular service; a phone showing “SOS” may be able to call emergency services but not ordinary contacts, depending on network and country.
- Do not treat a message as received until acknowledged. Repeat through a different path if an urgent request is unconfirmed.
Use broadcast and two-way radio safely
Rule: Receiving official warnings is different from being able to transmit distress calls.
- Keep a battery-powered AM/FM radio tuned to an official public broadcaster. In the US, a NOAA Weather Radio receiver can receive dedicated weather warnings; other countries use different services.
- For local group communication, choose radios legal where you are (for example license-free PMR446 where permitted in Europe); range depends heavily on terrain, buildings, battery and antenna.
- Know local frequency allocations and licensing before using amateur radio or higher-power sets; transmitting is regulated, and a portable radio is not a universal rescue device.
- Use plain language: call sign/name; intended recipient; position; emergency; required assistance. Repeat slowly and confirm responses.
- Test radios at realistic separation and keep a written channel plan with spare batteries.
Important safety limit
A radio bought online may be illegal to transmit with on local frequencies. Never jam emergency channels or rely on arbitrary “universal emergency frequencies.”
Understand satellite emergency devices
Rule: Satellite SOS and registered distress beacons are valuable but device-specific and are not guaranteed to connect.
- For remote travel consider a purpose-built personal locator beacon (PLB) or a compatible satellite SOS messenger with known coverage and a clear view of the sky.
- Verify regional coverage, registration requirements, battery life, subscription requirements where applicable, and rescue-contact procedures before travel.
- Learn the test function using manufacturer instructions; never activate an actual distress mode just to test it.
- Once a distress alert is sent, follow device prompts and preserve battery. Stay in a safe visible location unless conditions require movement.
- Know that a beacon may summon search and rescue but does not necessarily provide two-way messages. Give an itinerary to a trusted person before departure.
Signal rescuers without electronics
Rule: Visible, repeated, high-contrast signals can work when radios and phones fail.
- Use a whistle, high-contrast fabric, flashlight, and signal mirror in a reachable pocket.
- Use internationally recognizable SOS in Morse as three short, three long, three short light/sound signals when practicable.
- Choose an open, safe location visible from likely search routes; do not make fires or climb hazardous terrain just to signal.
- A signal mirror can reflect sunlight towards a known aircraft or search team without using a laser. Never shine lights deliberately to impair drivers or pilots.
- Continue protection from weather and conserve energy while giving signals. If found, clearly state the number of people and any injuries.
Practice and preparation
- Print an emergency contact card and rehearse a location-first check-in.
- Test SMS, a radio, and a power-bank setup without depending on Wi-Fi.
- Test legal two-way radio reach in two local terrain types.
- Learn device-specific satellite SOS instructions before remote travel.
Local rules and real emergencies
Use this as a training reference. Follow official incident alerts, regional law, manufacturer instructions, and qualified professional guidance. Do not attempt unfamiliar high-risk activities while already in danger.
Sources and further reading:
- Ready.gov — Family Communication Planning
- NWS — Warning Dissemination and Weather Radio
- NOAA SARSAT — 406 MHz Emergency Beacons
- NOAA — Register your Beacon
Official guidance may vary by country and can be revised; verify local updates before acting.