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What are the outdoor communication equipment?

Abstract: it is the dream of every donkey friend to climb mountains and mountains. Those places with beautiful scenery are often remote, and communication will be greatly restricted. Mobile phone equipment can't meet the communication needs, and it is common to get lost in the mountains and forests. Therefore, it is very important to use communication positioning equipment outdoors. So what are the outdoor communication equipment? Mobile phones, walkie-talkies, compasses, GPS, survival whistle and so on are all very common communication and positioning equipment. Let's look at the introduction first. Think of yourself in the journey of the donkey, honing yourself in sweat and intoxicated in the beautiful scenery ... The significance of the journey of the donkey lies not in the end, but in the journey.

In recent years, more and more donkey friends have joined the army of donkey friends, carrying equipment, backpacks, trekking poles and exploring little-known holy places. However, that beautiful holy land is generally an inaccessible and very primitive area. Inexperienced travelers, who are not prepared enough, have not carefully studied the safety conditions such as the weather forecast of the destination, and have not considered the possible impact of extreme weather, are likely to have safety accidents. However, in recent years, the number of lost travelers has increased frequently and year by year, and the travel safety of travelers has returned to the hot spot.

What kind of communication equipment should an outdoor donkey walk be equipped with? How to ask for help in an emergency outdoors? How can I keep in touch with the outside world without losing touch? Bian Xiao visited several senior donkey friends and well-known field rescue organizations in China and learned several very practical outdoor communication skills:

1, install GPS positioning program on mobile phone.

Mobile phone is the most widely used communication equipment. In the case of clear signal, in case of emergency, friends can immediately take out their mobile phones and ask relatives and friends for help through telephone, SMS and communication software. But in the barren hills, where there are no clear landmarks, how can you tell each other your specific location? Real-time location sharing between communication software and GPS positioning software can help you.

However, in the wild, mobile phones often can't be used without signal. At this time, when you need emergency help, you can call "1 12" for emergency help. Even if the mobile phone has no signal, the battery is extremely weak, and even the SIM card is not inserted, any brand of mobile phone can call anywhere.

2. Use the walkie-talkie and remember some listening frequencies.

The walkie-talkie is an indispensable communication tool for organizers. When there are many people in the team, it is best to equip them with walkie-talkies.

The walkie-talkie can not only keep you in communication in the team, but also keep abreast of the overall situation of the team. It is an important life-saving tool for you in an emergency. Old donkey's suggestion: 1, for friends who walk long distances, an extra battery can always play a role at critical moments; 2, a penny for a penny, cheap walkie-talkies can usually solve general problems, and high-end walkie-talkies can save your life at critical moments and extreme environments; 3. Try to avoid obstacles when calling for help or making important calls; Try to reach the open area and stand as high as possible; 4. Remember the following audio rate, which can really be used at critical times:

The public frequency of Beijing Radio Sports Association is 438.500MHZ, which is invincible. On average, about1-20,000 people listen to it every day in Beijing. No matter where you are in Beijing, as long as you need to call, there will always be someone who will imitate you and be willing to help you. Remember, when asking for help, you must first say ask for help;

434.750MHZ, Beijing Radio Sports Association frequency, invincible frequency, blue sky rescue team listening frequency, Changping Changhanlian radio club listening frequency, if you need help in the north, this frequency can be used as the first choice, the usage is the same as above;

438.550MHZ, the listening frequency of a club of Beijing Radio Sports Association, where many experienced radio enthusiasts have very powerful signal systems;

439.650MHZ, the monitoring frequency of Cheng Nan Ham Union. If you ask for help in the south, this frequency is the first choice;

438. 125MHZ, the monitoring frequency of Beijing-West Ham United. If you ask for help in the west, this frequency is the first choice.

437.325MHZ, 8264 Xiaoyao outdoor use frequency, are friends, can help will certainly help;

437.500MHZ, the frequency agreed by the off-road E family, is all outside, and those who can help will definitely help;

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3, the use of outdoor survival whistle

Survival whistle is an indispensable equipment for outdoor sports and plays a liaison role. Learning to use survival whistle correctly can make outdoor sports get more protection. Because the survival sentry is responsible for simple communication and directional help, don't blow it casually. Today, let's take a look at the use of the survival whistle.

Symbol description: ● Short tone (within one second); ■■■ Long sound (more than 3 seconds); The interval between instructions is 2~3 seconds, and the interval between instructions is more than 30 seconds (for example, it takes more than 30 seconds to send instructions repeatedly).

Communication (T): ■■■ (long tone) is used for voice communication between teams to determine the direction of whistling between teams and send a signal to indicate that the whistling instruction is received.

Set (u): ●●■■■ (two short and one long) set in the direction of whistle.

Forward (V): ●■■■ (One short and one long) When resting, it means that the whole team will start, and when moving, it means accelerating forward.

Waiting in front of the queue (W): ●■■■■■■ (one short and two long) is used to ask the front team to wait for the back team when the team travels too long.

Request for support (S): ●●● (Three Shorts) When encountering difficulties and needing help, the receiver will reply with a tone (T), indicating that he will support.

SOS):●●■■■■■■■■●● (three short, three long, three short) This is an international SOS code.

4.compass compass

Compass is one of the necessary tools for survival in the wild. Besides an accurate map, being familiar with the use of the compass will also ensure that you won't get lost.

Compasses usually have scales. The scale of "South" is 180, the scale of "North" is 0 (or 360), the scale of "East" is 90 and the scale of "West" is 270. The function of geomagnetic field, according to the imaginary magnetic induction line describing the magnetic field, starts from the geomagnetic north pole and enters from the geomagnetic south pole to form a closed magnetic induction line. The geomagnetic north pole corresponds to the geographical south pole, and the geomagnetic south pole corresponds to the geographical north pole. The N pole direction of the compass is the tangent direction of the magnetic induction line, so the N pole of the compass points to the north and the S pole points to the south.

When using the compass, you should hold it horizontally and stay away from the following items to avoid confusion of magnetic needles: the compass should be away from barbed wire 10 m, 55 m from high-voltage lines, 20 m from cars and planes, and 10 m from magnets such as magnetic containers. In this way, the compass will be less affected by these external interference factors when it is used.

A compass is similar to a compass. It is used to tell the direction. When using a compass needle, you should first set it to zero. Place the compass needle horizontally, and overlap the north zero scale outside the ring with the position indicated by the pointer inside the ring. This is the completion of the zero operation of the compass. When measuring the target orientation, the north of the site must be parallel to the north of the grid of the map, then align the target with the red of the north needle, read the included angle between the target and the north of the grid and correct the azimuth deviation of the map, which is the target orientation.

5. consider buying a "Beidou box"

Beidou system is a global satellite navigation system developed by China and one of the four largest satellite navigation systems in the world. But this is not an ordinary satellite navigation system, it has a little-known function-it can send and receive short messages, which is the satellite short message function. Beidou satellite signal covers the whole of China, and users can use short message communication all over the country anytime and anywhere.

"Beidou Box" is an emergency communication terminal based on Beidou system, and its characteristic function "SOS for help" is inspired by Beidou short message communication technology. The biggest advantage of "Beidou Box" is that it can still keep in touch with friends and relatives through satellite messages without cell phone signal, and share the current location of the donkey friend, so that friends and relatives can know the current location of the donkey friend even without cell phone signal. When travelers encounter difficulties or dangers during the journey, they can use one-button SOS alarm to send out distress information with location, so that rescuers can quickly understand the situation and carry out rescue. Small size, easy to carry and moderate price. You can go to official website to find out, this thing can save your life at a critical moment.

6, like more professional positioning can use GPS.

Outdoor GPS global positioning system can help locate, determine the route and prevent getting lost. Professional hand-held GPS should have IPX7 waterproof performance, 1 meter waterproof within 30 minutes, 1 meter natural anti-fall design, meet the harsh requirements of field work, and should also have good endurance.

In outdoor travel, the first thing to ensure is the correct direction, so a basic requirement of GPS is accuracy and reliability, especially in deep mountains and dense forests, if navigation is wrong, the consequences will be unimaginable, so try to choose products with well-known brands and good reputation.

In addition, mountain climbing is a physical activity in outdoor sports. Usually, we will make a travel plan to be completed in advance and have a correct prediction of the difficulty of the route. At this time, GPS with topographic map can be put to great use. If we have altimeter and barometer, we can know how much time and energy we need to spend on these sections by knowing the mountain situation and altitude.

7. Choose the right satellite phone within your tolerance.

Satellites can provide voice calls, short messages, GPS positioning, voice mail, e-mail, satellite Internet services (portable user base stations) and other services. Product types are the most common mobile phones, vehicle-mounted machines, ships, base stations and so on. You can talk at any time, whether it's deep mountains, wild forests or desert oceans; Good communication quality; With positioning function, you can query location information at any time; Small size, light weight and easy to carry; However, the price of satellite phones is relatively expensive (thousands to tens of thousands), and the usage fee is also relatively expensive (generally one minute in 6 yuan). It is difficult for ordinary travelers to bear the use cost of satellite phones, so they are only suitable for team use and share the cost.