1 What is legitimate, what is illegal D mtD-yZ% P / y
{very sorry to tell you, if you do not acquire the Chinese Association of Amateur Radio call sign, your hand to the radio station without Commission testing machine for the record, then get amateur radio licenses; when you press the hands of the LT6600 began firing, you have violated the law. People happy as long as no committee, the radio control car driving position, on a visit to your government, the confiscation of the machine or even a fine, is not impossible to do. Therefore, the more prudent approach is to test an association of amateur radio call sign, and no committee experience to the machine, give your hand sets a legal identity . However, the call sign test, that test is not difficult, nor is the examination fee; but behind China Amateur Radio Association, the management methods. You have to pay a lot of time and the long wait.
Would not it be in the hands of machines into a piece of scrap metal? Defeats fear. Illegal use of walkie-talkie because too many people. A considerable number of units and individuals to buy a table to start with, which together illegal possession. What was the proverb, law is not responsible for the public. So, we climb a mountain, set a team by car, with a few friends to chat. As long as you understand these rules, do not interfere with normal radio frequencies, and occupy an estimated non-person committee will not tell you seriously. `D & _` j? `) G / v
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1.2 \ (1) First , do not call Do not hand the money and time table to chat, maybe you will take up the frequency of an important industry, people getting mad you do not catch you, just.
(2) recommends the following frequency: Amateur radio frequency section of the preferred U 430 ~ 440, followed by China under the public radio frequency band of 20 points, followed by a foreign public radio FRS / GMRS (family radio service) provides the 14 frequency points. + Hs ~ # xL '{$ K
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1.3 U section of amateur radio, public radio frequency band in China, foreign public radio band Xiangjie
(1) Amateur radio frequency bands, means the International Telecommunication Union in particular division for amateur radio enthusiasts, ham radio enthusiast for learning,
air force 1, communication, use of the band. Each amateur radio enthusiasts, there is a call sign, in China, the call sign to BG at the beginning , and in Guangdong, is BG7 **. In the amateur radio frequencies U paragraph is 430 ~ 440m Hz. Do not underestimate the bandwidth of 10m. You know, allocated to the 3G mobile phone spectrum, but the value of the 10-hundreds of millions of dollars. Thus,
air force one, while most people call sign is not a legitimate use of the band, basically not much of a problem.! U3 |, a0V b9yEG `-} g
* qdg0z? 5wM \ a small band,
nike air force one, the regulations have a lot of features. First, it provides a fixed frequency of 20, can not easily change (not you want to click on the LT6600 what to what the problem). Second, the power is less than 0.5 W (we buy the machine a full 4 watts). Third, the antenna can not be demolished (6600 is the antenna can be replaced). as long as the machinery to meet the above conditions, in China, before they can legally, free to use. At present, most of the civilian walkie-talkie on the market, such as Motorola T6200C, belong to this category. 0.5 watts of power,
air force 1 classic mid, but it is limited in urban areas, may be only a few hundred meters. because of the 20 frequency points , all the 409 or so, it may be referred to as 409 section.
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the open civil-free promise band CB (Citiz Band) Channel frequency correspondence table
============ =============================
CH01-409.7500 CH02- 409.7625 CH03-409.7750 CH04-409.7875 oEu \ 9R
CH05-409.8000 CH06-409.8125 CH07-409.8250 CH08-409.8375 & j byHJ:]
CH09-409.8500 CH10-409.8625; CH11-409.8750 CH12-409.8875
* QRav: R, W d \] CH13-409.9000 CH14-409.9125 CH15-409.9250 CH16-409.9375
CH17-409.9500 CH18-409.9625 CH19-409.9750 CH20-409.9875
6600 as long as you set to the appropriate frequency, can and civilian the corresponding channel walkie-talkie call. but should also be considered a sub-channel (mute audio) CTCSS problem, say the following.
(3) Foreign public radio FRS / GMRS (family radio service) frequency band, is the foreign division Civil license-free frequency bands. corresponds to the Chinese public radio band CB. Previously, China has not civilian radio frequencies, so there are a lot of foreign inflows come in such a small machine, so many people use the machine though, is also selling more, but not recommendation to buy, not recommended at this frequency to use. but with more people, or sentence, with the use of it anyway. Foreign public radio provides 14 frequency points: the first 7 0.5 watts to 2 after 7 to tile, even abroad, is to be used after 7 license.
promised free overseas civilian band opening FRS (Family Radio Service) channel frequency corresponding to the table
==== ==============================================
; CH01-> 462.5625 CH02-> 462.5875 CH03-> 462.6125
CH04->; 462.6375 CH05-> 462.6625 CH06-> 462.6875 tD & H | lj
CH07-> 462.7125 CH08-> 467.5625 CH09- > 467.5875
CH10-> 467.6125 CH11-> 467.6375 CH12-> 467.6625
Similarly, when you want to call 6600 and such machines, but also set to the appropriate frequency, and consider the sub-channels ( mute audio) CTCSS problem. o4z; L & mG0x-ZW
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1.4 radio terms and some basic knowledge? ~ l. ~: P
(1) When you contact the radio station,
nike force one, the first paragraph will hear U, V para such terms. what they are meaning what? U section, V segment is based on the frequency of radio waves by the size of the scope of each section, there is a corresponding code. in amateur radio generally refers to paragraph V-148M Hz 144M Hz, U section refers to 430M Hz - 440M Hz. and our LT6600,
air force one shoes, it can be in the range of 400 ~ 470M Hz transmitter and receiver section of the entire U handheld radio. Therefore, it covers the amateur radio 430-440, 409 Chinese public radio frequency band, 462 bands of foreign public radio The three most commonly used frequency band, while the power of 4 watts, very, very useful. DO ~ sg $ KkX
(2) the tone: the tone is CTCSS, is very convoluted terms, technology is very complex. However, Let us look at the following popular explanation. the tone is the signal you send out a superposition of a very low above the additional frequency, with this, the machine can distinguish different frequency signal transmitting the same. n JZgY ~ j
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analogy: I previous day and dusk Crow, cloud Communications, ducks live in the highest, most favorable terrain, he can also contact me and the clouds, and cloud at the same time, and if I speak to him, he'd said. His radio will also ring our voice, the result is not clear who heard ( do not call the radio and support multi-mobile than, whoever you are free). this time you can set up a duck receiving the tone, if I did not set the tone transmitter, the duck will not hear my call; if the cloud and the duck set the tone the same launch, the duck can be very comfortable and cloud chat.
; in the civilian radio, there are the so-called sub-channels, it is actually the stage corresponding to the tone amateur hands . subsonic 50, and 38 sub-channels generally, the corresponding relationship is as follows:
sub-channels (mute audio) and CTCSS frequency correspondence w: Qv * cDFRa
======= =========================
01 -> 67.0 02 -> 71.9 03 -> 74.4 04 -> 77.07G * m \ \; 88.5n1p Z5E {q5V
09 -> 91.5 10 -> 94.8 11 -> 97.4 12 -> 100.0: TR2J! c # AJ3 `r
13 -> 103.5 14 -> 107.2 15 -> 110.9; 16 - > 114.8! t1t a {@; njn R & H
17 -> 118.8 18 -> 123.0; 19 -> 127.3 20 -> 131.8
A 21 -> 136.5 22 -> 141.3 23 -> 146.2 24 - > 151.4 0D ~ yU% fC6H ^ + n
25 -> 156.7 26 -> 162.2 27 -> 167.9 28 -> 173.8
29 -> 179.9 30 -> 186.2 31 -> 192.8 32 -> 203.5
33 -> 210.7 34 -> 218.1 35 -> 225.7; 36 -> 233.6
37 -> 241.8 38 -> 250.3
So, when your friends are using a very common kind of Civil small machine , you want to speak to him, first of all you have to align a common frequency, then it is best not to let your friends use sub-channels, if used, you have to form according to the above, find the corresponding sub- channels corresponding to the tone of the CTCSS function to open hand sets.
{a? A \ How far, very, very difficult to answer this question. But one thing is for sure, do not believe ads; another thing for sure is that the higher you stand, the farther you are associated. Advertising on the radio for civil claims 0.5 watts up to 3 km, but you depend on the small print behind, there is no obstacle in the flat on the ground. The more barriers and blocking, the shorter distance. I Dengtanglaang song in 2003, when tens of kilometers away can use the mobile phone base station Yangbajing call. Hand sets can be linked as far as actually to hundreds of kilometers, the atmosphere at this time there is an unexpected effect of reflection. Therefore, you deserted the place in need of emergency communication, even if you get a toy walkie-talkie, you can also find a mountain to climb as high as possible, maybe there is a miracle. In addition, another point is the antenna, a good antenna to have better results.
Sheepskin Article - 493 - Management of one's Exquisite Sheepskin ...
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