Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [communication]

Category for outdoor communication gear.

16
votes
3answers
237 views

How do you wave off a search and rescue helicopter?

We were out on a night hike. A helicopter showed up, by behavior it was search and rescue, looking not too far away from our group. It might have simply been doing training, but if it was a real ...
5
votes
3answers
135 views

How best to hold/aim a Garmin InReach for satellite messaging?

On a recent camping trip, I was having great difficulty sending messages with a Garmin InReach. I was in a woods with a moderately thick canopy overhead, but next to a small river so I could step out ...
9
votes
2answers
462 views

Can you use an Iridium phone with a SIM but with no active plan to place an emergency call?

It seems that you can't use an Iridium handset to place an emergency call without a SIM card (which seems to be more a commercial than a technical issue). What I'm wondering is whether an "expired" ...
31
votes
5answers
5k views

How do you aim a signal mirror?

Say you are in the middle of a desert where there is lots of sunshine, and you are trying to signal for help with a signal mirror. Either in the distance there is a person, or there is an airplane ...
7
votes
1answer
218 views

Is there a safer way to use a flare in a wooded area?

This answer on another question says that there is a risk of causing a forest fire when using a flare. Is there a recommended/safer way to use flares that lessens this risk, in the event that someone ...
20
votes
2answers
3k views

What is the risk of starting a forest or wildland fire with a flare gun?

When firing a flare gun in the air, what is the risk of accidentally starting a forest or wildland fire? Does the flare go out completely before it touches the ground?
5
votes
4answers
195 views

Are there sound-based alternatives to whistle signals for group communication?

Whistles can be used to signal to group members, however the downside is that other people may think you are having an emergency. Are there any other devices that would allow you to signal with noise ...
11
votes
4answers
2k views

Are there standard whistle signals for communicating with separated party members?

Similar to the previous question that turned up when I searched on this topic: Is there a standard set of light signals for mountaineers?, but for sound? Repeating sets of 3 blasts is standard for ...
9
votes
1answer
728 views

What would happen if I use a USA (GMRS/FRS) two-way radio in Europe?

This question is the opposite from this one: What would the consequences of using a US two-way radio (GMRS/FRS) in Europe? I know Europe has their own frequency range for two-way radios (PMR), but for ...
8
votes
2answers
180 views

Are there standardized signals to communicate with aircraft?

Suppose one is in distress in the wilderness, and is being searched for by planes or helicopters because they thoughtfully told their friends where they were going and when they'd be back. Alternately,...
17
votes
4answers
10k views

What are the consequences of — illegally — using a 446 MHz PMR in the North American wilderness?

I've recently bought a pair of PMR446 walkie-talkies with some 5–10 km range, operating at 446 MHz. We've happily used them in Sareks Nationalpark in Sweden. Now I'm moving to Canada, where this ...
4
votes
1answer
888 views

I am looking for a two way radio/device with constant contact

Hello, I am looking for a device to be in communications with another person while skiing without having to push a button. Exactly like a cell phone, but since phones don't work up where we ski ...
10
votes
3answers
2k views

What range should I expect for a reasonable set of walkie-talkies / two-way radio?

When I'm hiking with my friend, some of the time we hike together, but sometimes we hike seperately, and may be some kilometres apart only to meet on the agreed location for the evening. Our next ...
10
votes
5answers
366 views

How can I report an emergency via SMS text message?

When hiking, I often find myself in areas where cell phone reception is poor or intermittent. Sometimes the signal is not good enough to make a call, but it is still possible to send text messages (...
8
votes
1answer
2k views

Recommendations for two-way radios to use while skiing

Going skiing with another family next year and looking for two-way radios to use so we can stay in touch. I've used cell phones in the past but that can get awkward (and since we are going to Canada ...
11
votes
4answers
683 views

What qualities to look for in a good emergency whistle?

I've always been taught to keep a whistle on me in case of emergencies - it makes sense since it's small and lightweight but could really help in an emergency. However, something I've never really ...