walkie-talkie, good thing, the team leader is very handsome with it,

you don't understand, you don't need it, you think it's all pretending to be forced.

is dark and has big bricks. It can only speak too single.

is better than taking photos and sending WeChat. How can you do a small mobile phone.

lost the order, encountered the danger, the team leader could not see,

broke the mobile phone, there was no signal, and the charging baby saw the bottom again.

Looking at the sky, looking at the ground, tearful eyes are pitiful,

patted his thigh, scratched his head, and could not hold MMP in his mouth.

Ask God, worship gods, rescue and rescue quickly,

ravines, small canals, where and where.

Wait for Friday, after Monday, GAME OVER bird is flying into the sky,

rescue, people just cold, almost still have gas.

soil to soil, dust to dust, can only wait another 18 years,

hot post, bad news, 8264 and dead donkey.

Wait a minute, don't worry, rewind back to the front of hanging,

with intercom, lucky, the call distance is 3 kilometers.

is three kilometers, not far away, but sometimes it seems to be on the edge of the sky.

will turn on quickly. finally, there is news about the frequency and rescue.

found you, half a day, wife and children little Qian Qian,

made the headlines, and there was another accident. it was really naughty that the hiker was in distress.

1. The function of walkie-talkie is as described in the above poem

2. The purchase of walkie-talkie: A. First of all, the power of walkie-talkie is not as high as possible. In fact, you can't buy high power either. The maximum hand-held radio is 5W, and the commonly used radio is 2-5W. You certainly don't accept it. Open a treasure, even the very famous Baofeng, the best-selling brands and models such as Black King Kong, 8W,10W,15W and even 16-20W walkie-talkies are in large numbers. It is definitely a false target, with hundreds of white points. More than 5W first requires a radio license to hold, and second, its battery HOID does not live. Generally, a handstand can be used for 16 hours with one battery. If it exceeds 5W, it can't be used for one day. Isn't that bullshit. The intercom market of a treasure and even the whole network is extremely chaotic, especially the parameter identification, and its cheat people. Seeing that the standard is more than 5W, I only hope that it can reach 2W standard power, even if I have conscience.

B. How to buy it? Domestic products are characterized by relatively large volume, heavy weight and a long story about appearance. Baofeng, Beifeng and Quansheng are all big brands. They go directly to the official flagship store to buy it. They are required to buy real products and mature classic models. For example, Quansheng Black King Kong and Baofeng UV5R series (this is the 0.0 used by the Russian army in the Russian-Ukrainian War) are all commonly used models by team leaders. Imported brands, small Japanese things are really good, such as Baeongzhou, small and light, but the price is several times that of domestic products. Some models can automatically adjust the power of several gears according to the signal strength, which is very practical.

3. Frequency setting: within the theoretical frequency bands 144-146 and 430-440MHz of civil walkie-talkies, in fact, the domestic frequency band is generally wider than that of imported models, and the center frequency point of the antenna is [145 and 435MHz], so the better the effect is close to the center frequency point. (Dual-frequency walkie-talkie is UV dual-band, which is the frequency range of walkie-talkie:

U segment is UHF band, with a frequency range of 400-470MHz. It is characterized by poor diffraction and strong ability to penetrate buildings, and is suitable for [large and medium-sized cities with numerous high-rise buildings]]. The

V band is the VHF band with a frequency range of 144-174MHz. It is characterized by good diffraction and weak ability to penetrate buildings. It is suitable for [mountain areas, plains and open areas]].

The best frequency for hiking in the wild should be 145. If there is a single-frequency walkie-talkie in the team, there may only be U segments, and the 435 should be set to the public frequency).

In practical application, the limit communication distance in a completely open place probably corresponds to less than 1km for 1W power, 5W intercom within 5km (very vague, just continuous), very clear within 3km, audible across a hill in the middle, and basically inaudible across two hills. Many teams set a unified frequency very casually, in fact, this has nothing to do with the impact of communication distance, with the antenna's best receiving frequency.

4. Use details: When the average person uses the walkie-talkie, the back of the walkie-talkie is facing the palm, which seems to be no problem. In fact, the correct hand-holding method is that the walkie-talkie panel faces the palm, the thumb presses the PTT(PUSH TO TALK) key, the mouth is 3cm away from the delivery hole (I .e. the distance between the width of two fingers, the corner of the walkie-talkie is almost 3cm against the corner of the mouth), and the walkie-talkie antenna should be kept vertical and higher than the shoulder. One of the advantages of this grip is that the grip is stronger, even if the panel falls down, it will not break, and whether the other party receives it clearly or not often has nothing to do with the distance, that is, the other party's mouth is too far away from the intercom. This is also the reason why the walkie-talkie can hear the conversation clearly in an extremely noisy environment, because its sound pick-up distance is very short, and you can't pick up the sound at a distance;

The second is to appear more professional, so that no one will see you and say: You, new donkey? ", especially when this post is posted, everyone will stare at your walkie-talkie.

5. Walkie-talkie is not karaoke, Maiba is not only ignorant but also anti-intellectual. Interphone is a simplex channel, only one person can transmit signals at the same frequency, and it is forbidden to interrupt during other people's speech (the working mechanism of simplex channel determines that the inserted signal is invalid, and others cannot hear the signal of the inserter, which will only make the interviewer unable to hear other people's words and miss the information); Moreover, the most power-consuming behavior of interphone is to transmit signal, then receive, and finally standby, the power during transmission is almost 10 times that of standby.

6. Standard language:

a [A Call B] (the call object can be a single person or a group, indicating the identity and object). The first call should be repeated three times to let the other party hear clearly and wait for the other party to respond for 5-10 seconds.

b [B received, please speak, over]. if B does not respond 10 seconds after a calls B10, others can respond and identify themselves.

c [A asked for the position of B, finished] explain the matters after receiving the response from the other party, with medium speed and clear pronunciation.

d. [B is at position XXX, over]].

walkie-talkie should be [one question and one answer]. It is strictly forbidden to talk at the same time. It is strictly forbidden to interrupt at random. You should first show your identity. At the end of each sentence, use [finished]. You must also respond after confirming that the other party has said [finished]. Otherwise, you cannot hear what others say and your own words cannot be transmitted when you interrupt (say it again, when you do this, people do not question you about the new donkey, but look at the anti-intellectual eyes).

7. Carry instructions with you (very important). The actual function of the walkie-talkie is very powerful, not a simple intercom. For example, if [sub-tone relay, double guard and frequency sweep function] can be mastered all of them (it is still difficult to operate, and instructions are still needed), it is basically impossible to lose contact with other handstands around.

For example, [frequency sweep function], even if you are alone in the mountain in distress, no one knows the frequency of your handstand, and you do not know the frequency of rescuers or other nearby hikers. The frequency sweep function can continuously scan all channels within the communication range. As long as there are other handstands communicating within the communication range, they can receive the locked frequency and then get in touch, which is so powerful.

8. Use of emergency rescue: Each city has radio relay stations. The relay station is usually guarded by specialized personnel, and there are also many radio enthusiasts who communicate online. The relay station can be understood as a very powerful walkie-talkie (the relay station played a huge role in information communication during the Wenchuan earthquake). The local relay frequency can be found on the Internet. However, the relay station needs the walkie-talkie to have sub-audio function, that is, the transmitting frequency is inconsistent with the receiving frequency. You can also check the rescue frequency of the local blue sky rescue team. Contact can be attempted in case of emergency. In case of the outbreak of the Third World War and the arrival of nuclear eggs, all network communications will be OVER, and only the handstand is an artifact.