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Edit:   Read:568  Date:2017-3-13
From the equipment level, amateur radio walkie talkie and professional radio walkie talkies are designed to meet the needs of radio enthusiasts
Radio walkie talkie. This type of interphone which can also be called "playing machine". For this amateur radio business, all countries are
Opened a dedicated band assigned to amateur radio enthusiasts. China opened up the band for 144~146MHZ and 430~440MHZ, the world
The country is also generally this band. People's Republic of China radio frequency regulations issued by the State Administration of radio, Ministry of information industry, October 2001
In the amateur radio and amateur business, it has a special description of "amateur business: Amateur Radio for self training, phase
Wireless communication services for mutual communication and technology research. An amateur radio is a person who has been formally approved of radio technology,
Its interest is purely personal hobby and not involve profit." Due to the limited frequency range of radio walkie talkie, the use of environmental conditions and the use of
Seek professional walkie talkie differentiated. The main feature of the amateur machine is that the volume is small, the function must be complete, can be frequency scanning, can be in the panel
On the direct frequency, panel display frequency points. The technical specifications, equipment stability, frequency stability, reliability and working environment are also relatively
Professional radio walkie talkie. The direct result is the lower cost of amateur machines to meet the needs of individual purchases. At present, our country makes
Most of the amateur machines are imported equipment. These devices Motorola in the mid 90s there are two handheld walkie talkie AP50, AP10
Into the domestic market as well as the Taiwan ADI's AR-146/446 car platform and S-145/450 handheld, are produced in japan. These amateur
The machine is mainly the Kenwood Corporation of Japan TH22A/42A handheld walkie talkie, TM261/461 car Taiwan, Japan alinco company DR130/430
DR135/435 car platform, Japan's YAESU FTC2008/7008, VX150 handheld walkie talkie, (ICOM, Japan's IC-)
2100H car platform, Japan's MARANTZ C150/450 handheld walkie talkie, etc.. Amateur machines generally have a feature of their working frequency range
The rate is wide, can work in V and U within the scope of the whole paragraph. V segment for 136~174MHZ, U segment for 400~470MHZ work. But its technical index
Just get the guarantee in the amateur band, such as Japan's DR435TG amateur alinco machine working range of 136~173.995MHZ, but
Technical indicators can only be guaranteed in the 144~147.995MHZ amateur band. Similarly, DR435TA professional machine, its technical indicators in 136~173.995MHZ
Can meet the requirements within the scope of. Another example of amateur radio enthusiasts like to use the Japanese Kenwood Corporation's TM461 car, in the technical means
The subject is so specified, the scope of the index is 430~440MHZ, the actual operating frequency range is 400~470MHZ. If you want to make
With the best to re commissioning, especially power, otherwise a lot of power down. Due to the low price of amateur machines, some professional users will also amateur
As their choice of models, at this time it is best to have experienced engineers to re debug to ensure that the working frequency of the performance indicators. Expert
Most of the professional radio walkie talkies are used in the professional operation of the team. Therefore, professional radio intercom
The machine is characterized by simple and practical function. In the design are left with a variety of communication interface for users to develop two times. The frequency setting is mostly through
Computer programming, the user can not change the frequency, the panel shows only the number of channels, not directly display the frequency point, the frequency of confidentiality is better,
Frequency stability is also high, not easy to run frequency. In the long-term work, its stability, reliability are higher, the working temperature range is wide, generally
To 60 in 30 degrees. The operating frequency of the professional machine is in the VHF section of a part of the V high segment (148~174MHZ) and V low segment (136~160MHZ).
Another part is intact (136~174MHZ). However, in the UHF band, most of the U high segment (450~470MHZ) and U low segment
(400~430MHZ), and few are intact U (400~470MHZ). The performance, reliability and stability of the professional machine is higher than that of the amateur machine
Amateur confidential nature than high, some even much higher. Domestic use of professional machines in addition to part of the domestic, mostly imported models. Motorola
Almost all of the production models are professional machines, and its products are GP88, GP88S, GP2000, GP328/338 handheld walkie talkie, GM950,
GH300, GM338/398 vehicle, T2000 series car Taiwan New Zealand down the company, the company co (KYODO) KG series vehicle station,
Handheld, Japan's Kenwood Corporation TK series handheld walkie talkie, car platform, YAESU VX160, VX400 handheld,
VX4000 vehicle platform. Japan ICOM company F series handheld walkie talkie and vehicle platform. Domestic production of handheld walkie talkie many models are in accordance with the special
Industry design standards, but the real professional level of the model is not much. The gap is not only in the design technology, more important
The quality of the components, manufacturing process, the level of assembly process, the quality of parts processing, the selection of materials (such as plastic chassis)
Do not be in the environmental testing of products, as a professional machine must be subject to strict environmental testing standards. Many imported machines are in accordance with the U.S. military standard
MIL-STD810C, D, E test. MIL-STD810 standard is the U.S. military in the harsh environment for product performance standards
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