Talked about the choice of Amateur Radio

 Talked about the choice of radio amateur to join the Association
many new friends are starting from the purpose of making friends, but the knowledge of radio equipment not know much about the face of many brands on the market model, not knowing how to start. Since the state In recent years, radio communications equipment to lift the franchise market, limit, making the operators of radio equipment increase exponentially, while the various antecedents of domestic, import radio stations, and various professional sectors filled with used equipment discarded in the market where, for a lack of knowledge of radio technology, radio equipment, the initial contact for new members really need to have a pair of eye. now that I know about the profile of radio equipment to share, where biased, please correct me.

choice of models is not only amateur radios equipment needs testing, for the record, the use of equipment to the Chinese Radio Sports Association also has a Membership registration certificate and the corresponding b operation to use. If I say these are still not Change the way you love amateur radio equipment, then I think you will become a real ham radio, then we choose as a beginner's look at what kind of equipment to begin your journey into amateur radio. Now I are talking about the types of equipment, shop conditions, market conditions are basically to Beijing, for example, because the fans in Beijing to maintain the current volume, in particular the amount of new members has been retained to maintain a leading position in the country, but I am also in Beijing, Some of the specific circumstances of other regions is not too full to master some of the biased point of view is, but please forgive me.
frequency current in the Beijing area for beginners, the first contact is the 430-440MHz (UHF) and 144-146MHz (VHF), of course, as four operators can operate 29.6MHz (HF), but to reconcile the relatively small number of band equipment, in general, as long as you can to take care of U / V segment on it. < br> First, the current can reach as a beginner is mainly hand-held radio stations (hand set) and the car radio (car units), and other similar base stations, the reader opportunity to contact other equipment is relatively small, I'm here temporarily introduced. whether car radio or a handheld radio it needs to include the power supply system, the main equipment, antenna systems consisting of a complete system to work properly. to hand sets, for example, he includes batteries, body and antenna, the decision a radio performance of many factors, but confined to the following aspects: antenna efficiency, equipment performance, transmission power, which constitute the evaluation of the key elements of a radio, of course, some devices are not necessarily the radio itself also need to match, such as antenna power supply as well, relatively speaking, the evaluation of relatively simple hand-sets, car sets is more complex.
theories do not speak too much, because my stomach is also very limited what , or talk radio now.

our hands the choice of units from low to high that from the point of view, said the price of domestic hand-sets the price is cheap, of course-money, performance, and most general, only to meet the simplest requirements of voice communications, but also the internal structure is simple, often can not be more complex transformation, such as open frequency, spread spectrum and the like, so there is an important principle is to buy must be made before hand and distribution units providers stressed the need to be able to work in the amateur band, otherwise you are likely to buy a pile of waste. But we are, have a whole section to cover the 400MHz devices currently on the market can cover 400MHz whole section of these devices are spring Sheng K4AT, TG-45AT, LT-6288 and so are several. in the selection process of hand sets, the best choice to support the frequency display mode in the emission of equipment, because the current so-called 6288,618,5188,5288, there now very popular so-called only show launch CH1, CH2 and the like channel number, use up more trouble, the best choice in the working state display frequency models, this will be convenient for your use. For the lovers in Beijing , Also it is important that your equipment functions best support the tone, otherwise you will not use the Association's relay equipment. now more popular Beijing markets K4AT, TG-45AT, LT-6288 is that several devices , the first two devices are powered by nickel-metal hydride battery, while the latter is the use of lithium battery power. nickel-metal hydride batteries due to memory effect, are generally not optimistic about the ordinary people. In fact, this question should be from a different perspective, nickel hydrogen battery does have a memory effect of the defect, but because of its wide temperature range, can be adapted to colder areas in the field, while the lithium battery is the most obvious temperature-sensitive defect, once the temperature is too low, the battery will fail, this For frequently used in the field can be said for the use of radio is well worth consideration. In addition, K4AT and TG-45AT liquid crystal display used in the narrow perspective of existing defects, once distance or a certain angle and the screen, display information on the screen will be difficult to interpret, the S form is not allowed to deliver the true received signal strength of the transmit power, although the impact is not too great for beginners, but when you initially got some common sense after amateur radio, you will found to use them you will not be reported to the accurate signal report, which will make you embarrassed. As for the entry-level devices such gaps are not too big on accessories, in addition to LT-6288 lithium batteries used in slightly higher prices (50 million) than Other such as car charger, headset, microphone in hand and other parts prices are the same as K4AT, TG-45AT cheaper (Beijing market price 260,280 yuan) overall sales better than the latter, but in my personal and words, I think LT-6288 Although slightly more expensive (Beijing market price of 380 yuan), but overall price is still good. Of course this is a benevolent see benevolence and the wise see wisdom of the problem, only for your reference.
If your funds allows you to select the hands around 1,500 yuan in Taiwan, then I recommend you take a look at Kenwood's TH-G71, Yaesu FT-60R or the Yaesu VX-2R, of course, there are some other options such as iCOM the T7H, but because they can not Frequently, I will not introduced, the previously mentioned 3 radio should be more common devices currently on the market, their features can be used first, U / V two bands, which is hand-made units can not match advantage. As for the performance comparison between them should be said that when the TH-G71 has been recognized for a long time the best value for money amateur hand two-stage units, after prolonged use there is no obvious bug, batteries and other accessories are also many domestic alternatives, Maintenance is also easy; Yaesu FT-60R is the latest Yaesu amateur hand sets a basic technical performance and TH-G71 is similar, but the standard battery for 5W of transmit power can achieve, but durable aluminum body, the next will be on the TH-G71 form a huge market impact. But this first performance and the quality of its own time-tested premise, just the device into the current market soon, can not jump to comment. Yaesu VX- 1R 2R is the original alternative, the power has improved over 1R, but only the maximum power of 1W, the preference for high-power hand-sets for some friends may not be suitable, but it is compact size, and without transformation, and have accepted the whole paragraph capacity is still very attractive (in fact it should be considered accurate for a receiver, but also has the function of low power transmitter only). Beyond that, said there Yaesu VX-5R, IC-T90A, VX-7R, TH-F7 and other equipment, of course, better performance, but the prices are higher, generally more than two thousand, some even up to 3 thousand, if you are interested in or go online to look for product brochures, and I do not introduced one by one the.
car in front of Taiwan, said the choice of
are hand sets, there is a choice is car sets, car radio now largely made in China, the country will soon launch the restrictive power of amateur policy (Level 4 5W following operations are only allowed transmit power, there may further restrict the use of UHF frequencies), single-stage (especially a simple UHF radio) will be possible after the increasingly unpopular, and because IC-2720H, FT -7800R dual-section of such a large number of popular radio, so the original was very popular in the TM-461A, DR435T, GM950i so simple to lose market UHF stations.
here elaborate on the market today the IC-2720H, IC-208H , FT-7800R, FT-8900R and other radio stations now. Currently the price on the FT-7800R is certainly the most competitive, more than 1700 yuan price was all the rage Kenwood TM461A than the price of more than 10% cheaper, almost Other single-stage machines and low-end two-stage machines have occupied the market space, but recent rumors, FT-7800R performance is not very stable, some said that quality is not clearance, this is speculation, because I have not used the device , not to make improper comments, but testing machine is also able to meet the technical requirements of nothing. IC-208H is iCOM the company launched last year two-stage machine, the famous feature is the U / V are two bands 50W on both the power to emit, but in fact this feature is not meaningful, because the power goes far beyond amateur allowed to use maximum power, transmission power is not a decision Moreover, the effect you the most important indicator of communication. but I the company's equipment or on iCOM certain impression, and after I had used the IC-207H IC-208H is the predecessor, in addition to some poor anti-interference ability in paragraph V, the other performance and remarkable. IC-2720H has is all the rage two years ago, a car radio, large LED screen, the standard separation of the panel design, two-stage while listening, and even through the transformation can also be U / V cross-section forward, has also been used as a power control field for effective management problems can not use the low power transmitter and the quality of the instability panel screen some of the negative word of mouth, but now it seems these problems have been resolved. but also by the FT-7800R huge impact, at present no longer seems to be loving as before who favored the. FT-8900R is the only one currently on the market can take into account 29/50/144/430 four car radio amateur bands, it has been compared with the IC-2720H, in fact, is not very scientific , or on his ability a lot stronger than the IC-2720H, and it has not been started too negative word of mouth, but the relatively high price is the FT-8900R has a weakness, of course, there are still some friends are obsessed with FT-8900R powerful features, a Yaesu loyal fans. of course, Kenwood's TM-V7A, TM-D700, TM-V708 and other two-stage device, but they have maintained a consistent high Kenwood strategy, even more than the FT-8900R but also much more expensive, the price of the Beijing market in 4000 is basically over, but also basically in the case of a price without the city, do not waste time introduced.
If money was not an obstacle for you, and you believe Amateur Radio will be one of your major hobby, and some stations are more powerful as you consider, FT-897D, FT857D, IC-706MKIIG are able to cover the VHF and HF communications radio multi-band all mode, These equipment prices are cheap, the cheapest FT-857D also about 5900 yuan, if coupled with related auxiliary equipment (day transfer, power supply, antenna, antenna support, etc.) is estimated to be more than million investment, and usually I not recommended for beginners to start thinking about such a device, after all, expensive, and if you really like amateur radio, you may find that the whole mode multi-band radio is not necessarily the best choice, after all, inherited many features of a car radio in which the manufacturer also had to accommodate the dimensions of certain features can be simplified, in ham circles inside the FT-897D has a fun style called In the high-end equipment it can also be counted on the entry-level only.
antenna selection
These are radio, there is also a major constraint, a beginner can not be considered, that is, antenna! a better device than a good antenna is more than a good height, but the importance of the antenna is often overlooked by some beginners, in fact, the antenna is very important. VSWR, gain knowledge are very important, but you the lack of testing equipment and basic knowledge of the circumstances, is difficult to judge.
or from some of the look and intuitive way to speak up, so now there are basically several types of antennas: Hebei produced in various parts of the so-called ;, health and other domestic manufacturers Broadcom's single-paragraph (UHF) antenna, the country (including China and Taiwan) production Fangzuan antenna, diamond companies in Japan, Daikin company's antenna, this array is basically arranged in accordance with the value, but does not necessarily represent the performance of various antenna position, for example, if you use a single segment (UHF) equipment (whether car or handheld) my suggestion is to buy an Diamond Antenna Diamond Antenna and even true, because you are using a single UHF frequency band, and the years of manufacturing, stable performance, simple process, quality is guaranteed, performance should be better than any of your antenna than his poor, we've made a comparative test, even better than the real diamond, do not blindly believe that foreign countries. Kin Broadcom's antenna is not bad but the price as the Quality sent a lot, and even some Fangzuan from the appearance of genuine diamonds can be comparable to, but not with a view of the antenna, but for communication, the key lies in quality. If you have the appropriate equipment, such as standing wave table, antenna analyzer and the like, of course, can take the test several Fangzuan, perhaps single out a performance from good, but I recently saw a lot of shoddy imitation, can not withstand a few days of wind and sun, Fading is not rust bend! it shows the difference between material and craftsmanship! so if you are using a two-stage device, I suggest you use a better antenna, or a real diamond of Daikin's all good, of course, the best dealers from getting goods relative to the formal, not too much attention to a few dollars difference, and sometimes suffer a great deal petty advantages.
In fact, in addition to the host and the antenna suction cup, card edge, feeder lines, power lines are also very important Not that have to buy the most expensive, but my advice is not too cheap, the saying goes, sucker is certainly an advantage because he can give full play to the effects of the body as a ground network, the card is an alternative choice side, summed up a bit, if you do not frequent the place where the underground parking garage, culverts, tunnels and other low low places, I suggest you use the suction cups, this effect will be better communication, but also something to consider is the best use of magnets with rubber suction cups, not wrapped in cloth outside the magnet or suction cup silk lining, This will affect the ground network will also affect the sucker and the body of the connection strength, speed greater than 100 km in the time, there may be torn down to! feeder thicker the better in theory, but it depends on whether you can meet vehicle installation requirements, in particular, the backlog through the door, or rolled when not to be. power cord first recommended the original radio is equipped with power cord, power cord not only used to meet the needs of wire, generally above also has a safety device to ensure that short-circuit accident destroyed equipment. And I also recommend, where possible, under the conditions of a magnetic ring around the power lines above, to reduce vehicle caused the engine to the radio communication noise. reminded that the power cord from the vehicle's battery directly to a certain leads, do not easily change the circuit part of the car, so very easily lead to vehicle fires.
How to choose my equipment
Maybe you still can not read the contents of the previous decision in the end what kind of equipment purchased to meet your present and future the demand for a period of time. then let us come back from your use of the conditions and environment to analyze it.
If you are new to amateur radio interest is in a relatively fixed range (or several, such as Che Youhui like-minded friends), then I suggest buying a hand-held radio is sufficient, those who choose to domestic and imported radio, depending on your financial radio management departments and local requirements. Generally speaking, hand-held radio will not power more than 5W, the national operator for the four operating level requirements, not violations launch, it is very easy to pass certification, and your radio use was also mainly in the travel or the use of contact between a few friends, do not have too much consider the requirements of long-distance communication, because sometimes in a motor vehicle if used as the body of a certain metal shielding effectiveness of communications, only need to add a car antenna on it.
on your device if you can All received signals are very interested in amateur radio, hoping to learn more through radio counterparts, I proposed to consider car radio, so you may not have access to Level 3 qualifications or higher level after the re-acquisition of operating radio stations, to You can use the higher power (FM maximum not exceeding 25W), Communications to obtain better results.
If your costs are limited, but they want to select some of the equipment and powerful, then select the used equipment after all, a discount in the program, but the choice of used equipment for new members in general is a very challenging thing. a wide variety of used equipment, a model following suffixes may be different because of a direct impact on your ultimate use of results, there Some equipment is refurbished dealers were treated, from the outside looks almost brand new no different, in fact, replace old equipment, but is just a new shell. For example, Kenwood's a very commonly used hand-held TK-308 machines have several different models, the most common is the TK-308 (1) and TK-308 (2) two, TK-308 (1) is the original 400-420MHz equipment, by spreading can be used in the 430-440MHz. but if you do not accidentally switch to user mode under device, even if you open the back cover, the use of reset switch to reset, the device may not work properly. This is because the device center frequency deviation shift, and must be re-reset the device into a low section of machine, only after the re-use of spread spectrum, but also need some special tools, or it will damage equipment. This is the TK-308 (1) usually in the market than the TK- 308 (2) the truth to be cheaper, but if you do not have a wealth of equipment knowledge, it may be taken. then such Kenwood's TK-378, Motorola's GP-88, GP-88s are likely to be dealers in the case play tricks on, because only a few dozen dollars to a new chassis, it is that the dealer will tell you replaced the shell, but still the second-hand equipment, but some of the less experienced dealers specification of new equipment it is possible to impersonate sell it to you. So, in order to purchase used equipment, you really need a pair of eye, or need a real knowledgeable friend to help you. The inside of the device with or without maintenance, the device is being altered, it would require more extensive knowledge of the equipment Therefore, when the purchase of used equipment, be sure to be careful.
certification and filing
with equipment, we have to abide by state laws, subject to rules of the game. the first thing is to make our devices work with a legitimate identity, that is, inspection of the radio management unit, for the record, to obtain licenses to radio stations!
on equipment testing, record some of the different parts of the policy, some provinces For imported equipment certification, have very strict rules for the record, basically difficult to pass inspection machine. but asked for more lenient in some areas, largely imported equipment can be seen as SDK (large CKD) treated, or through testing . It the request of management, as the country may be, so we have to buy equipment before consulting the relevant authorities, whether you want to buy the equipment to obtain certification by, or will result in a waste of your investment.
for inspection machine, you have to note is that your device is best not to carry out major changes, even if you like DIY, or send an avid amateur welder, it's best to wait until after hands-on testing machine. In general , in Beijing through the new equipment is high probability of testing machine, frequency offset can be generally adopted within the hands of 3K, stray not too big, not too much like the power, I suggest you tune into a low-power device, so that the most easy to pass, if it is hand-held radio, the best time to maintain a good winter temperature, there was a VX-7R deviation occurs because of low winter temperatures, the result is not passed inspection machine, generally are not a problem. should not be too worry. but if you buy used equipment, it would have to pay attention, the best time of the transaction or take it for the first time after a comprehensive test, if there is frequency offset, spurious issues such as repairs as soon as possible, so that when the testing machine trouble. < br> In the inspection machine, your equipment should be fully in line with the national amateur radio stations for the management requirements, should not appear in your radio should not occur in some frequency. So I want to remind those who are not familiar with the equipment new members friends, do not blindly listen to distributors to say, free to open the device frequency, spread spectrum, the inherent technical risk to do so, may lead to more serious you can not test drive, to be proper for the word for it Evil, Evil listen! radio licenses in the 409MHz frequency of the public work is to avoid violations.
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