Digital Mobile Radio
  • Step into the magical world of radio
    Step into the magical world of radio on 2023-02-14
    On February 13, 2023, the world ushered in the twelfth "World Radio Day". When it comes to radio, many people will feel mysterious and unfamiliar, but human life is increasingly inseparable from radio. From radio, television to military radar, from vehicle wireless communication, satellite communication to cellular mobile communication, new radio technologies are constantly emerging ... more and more radio applications are quietly changing our lives. Radio technology is also playing an increasingly important role in radio and television, communications, railways, transportation, aviation, aerospace, meteorology, fishery, scientific research, emergency rescue, news media, public security, armed police, military and other departments and industries. Role, let us walk into the magical wireless world together today! 1. What is radio? The earth we live in is surrounded by electromagnetic waves, and the ubiquitous electromagnetic waves spread from small centers to all directions like water ripples. Radio waves refer to electromagnetic waves with a frequency below 3000 GHz, and use the propagation of radio waves in space to realize information. The technology of interactive transmission is called radio because it gets rid of the shackles of wires. 2. Radio Spectrum Resources The so-called radio spectrum refers to the pedigree formed by the arrangement of various radio waves according to the frequency. The development of any radio service needs radio spectrum resources as a carrier. Although radio spectrum resources are invisible and intangible, like natural resources such as land, minerals, forests, and water resources, they are important and scarce strategic resources owned by the country, and contain huge economic, social, and military values. Over the years, the workers of my country's radio management agencies at all levels have been aggressive, pioneering and innovative, scientifically managing radio frequencies, effectively maintaining the order of air waves, and ensuring the smooth development and operation of rich and colorful radio services. 3. New Radio Technologies, New Applications New radio technologies and applications are constantly emerging: mobile communications are rapidly updated, and 5G is gradually deployed; radio broadcasting services are moving towards broadband, digitization, and networking; the integration of radio and the Internet has opened up a vast new world, such as mobile Internet, Internet of Things, smart Radio technology and application innovations such as cities, Internet of Vehicles, mobile payment, wireless charging, and smart wearable devices are incubating a large number of strategic emerging industries, and huge economic and social values are emerging.
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  • How to pair the channel on the two way radio?
    How to pair the channel on the two way radio? on 2023-01-09
    Many users do not know how to "pair" channels when using two way radios. This article combines the types of two way radios to talk about their related knowledge.   The answer is "turn the FM knob". Strictly speaking, there is no so-called "pairing" for two way radios. The frequency used for calls on two way radios, whether it is analog signals in the early years or digital signals later, as well as the current base station and IP intercom technology, although the technology has changed , but the frequency used remains unchanged. As long as one or more two way radios are set to the same frequency, then the two way radios under this frequency can directly make calls, and the calls are one-to-one or one-to-many. "Pairing" said, just turn the adjustment button, you can tune the frequency.   What is a two way radio frequency?   The so-called "frequency" can be understood as TV channels and call channels. Based on different application industries, the frequency of two way radio is strictly limited. For example, the frequency of U-segment for civil use is between 400-470MHz, and the frequency of V-segment is between 136-174MHz. Take the 420MHz frequency, A radio and B radio as an example, as long as the frequencies of these two radios are all set to 420MHz, as long as the communication distance does not exceed the range, and there are no super interference sources and obstacles within the communication range, then Two two way radios can make a call, and the signal transmission during the call is limited to this frequency, which will not affect the call of equipment in other frequency bands, such as the 350MHz frequency used by public security and the 220MHz frequency used by the coast; the 433MHz frequency used by amateurs; the frequency used by mobile phones 900MHz frequency; the 85-120MHz frequency used by the radio, etc., do not interfere with each other, and do not need to be paired. As long as the device has a frequency search function, you can receive or transmit signals by adjusting the frequency, and you can also communicate.   What is the difference between the new number of two way radio communication?    The analog signal two way radios in the early years used analog signal technology, through a special sound wave oscillation device, converted it into an electromagnetic signal and emitted it, and then restored it at the receiving end to generate electronic sound; while the communication method of the digital signal two way radio is different from the analog The signal two way radio is the same, but it is no longer a signal simulation, but directly encodes the audio signal, and then decodes and restores it through the corresponding decoder. The communication distance and communication quality are much stronger than the analog signal; as for the base station communication technology, IP walkie-talkie is just a personal definition. It is essentially a digital signal communication, but it is combi...
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  • Why hasn't the walkie-talkie been replaced by the mobile phone?
    Why hasn't the walkie-talkie been replaced by the mobile phone? on 2023-01-07
    1. The walkie-talkie is not restricted by the network. In places where the network does not cover, the walkie-talkie allows users to communicate easily.    2. The walkie-talkie provides one-to-one and one-to-many communication methods, one-click to talk, simple operation, and freer communication, especially in the case of emergency dispatch and collective work, these features are very important.   3. Call costs are low. For mobile phones, communication is more based on SIM cards, and each time you need to dial a number, or call through a Whatsapp ID to make a call! He has strict signal and network requirements, otherwise the call cannot be realized!   In the case of calls on fixed occasions, sometimes faster and more stable communication is required, which will not be restricted by the operator's network! Then the importance of the walkie-talkie is self-evident! For example, in construction, it is generally communicated with tower crane drivers, high-rise buildings and underground floors. The walkie-talkie is a very good way to transmit information. You only need to press and hold to talk! In some coal mines, some people went down the mine, and the commander above also talked through the walkie-talkie!   In some live broadcasts,the director communicates with the host and actors through walkie-talkies, but sometimes it is a one-way communication, and sometimes it is a dialogue form of communication!   For many special operations such as public security and police, it is also through the walkie-talkie! In some scenarios, it is necessary to communicate without a network signal, and the people who use the walkie-talkie are relatively fixed, and there will not be too many changes, so the walkie-talkie is more convenient. It can also establish a connection for communication faster! This is not available on mobile phones!   Then maybe some mobile phone manufacturers can consider adding a walkie-talkie function to the mobile phone, but this does not mean that the mobile phone can still replace the walkie-talkie!   Because there are walkie-talkies that need to be held, and there are also those that are connected to a headset and are portable! The mobile phone is not portable in some scenarios, especially when the hands are occupied and you need to make a call. Perhaps many manufacturers of Bluetooth headsets can consider creating Bluetooth headsets with walkie-talkie functions for special operations!   But having said that, walkie-talkies are required in professional scenarios. Many enterprises and institutions have frequent communication needs in fixed places, such as issuing instructions, such as reporting the situation in a timely manner, for example, in special scenarios, the network signal is relatively weak, such as communication needs. Especially timely, without a few seconds of delay. Then the walkie-talkie is definitely the best choice.   For example, the observers of the ...
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  • What is the principle of nationwide PoC radio?
    What is the principle of nationwide PoC radio? on 2023-01-05
    The nationwide PoC walkie-talkie is also called public network walkie-talkie. The main selling point is that there are no restrictions on distance group calls, group calls, single calls, and high-definition sound quality across the country. There is a built-in mobile phone card with 4G signal, most of which are for telecommunications, and it is a kind of data card, which cannot make calls or send text messages. It is true that it is better than traditional walkie-talkies. But for the same PoC walkie-talkie, there are still many ways inside. For example, I bought two experimental units at the beginning, which were from Motorola, and they were very good in every aspect. Fortunately, I found out that they were OEM, and Motorola had never produced this model. Later, I found out that the same style of walkie-talkie was posted with several different brands, and I realized that this industry is quite deep. The cheaper the walkie-talkie, the more it advertises that it will be free for life. These are basically liars, and they are all small platforms. The good ones can be used for a year, and the unlucky ones can't be used for a month. Moreover, there is a shortcoming of the nationwide PoC walkie-talkie. If you want to buy it later, you can only find him, otherwise you will not be able to connect to the same network. Therefore, when buying a PoC walkie-talkie, the first thing to look at is the platform, and then the brand. PoC walkie-talkie on the same platform can all communicate in a network, and walkie-talkies of different brands are fine, as long as the platforms are the same.
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  • Labour Day Holiday Notice
    Labour Day Holiday Notice on 2022-04-30
    Holiday Notice: Please note we will be closed on 1st and 2nd May for Labour Day Holiday. We will resume on 3rd May. Thank you for your attention!
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  • SenHaiX Mobile PoC Radios SPTT-N60 Are Supporting Thailand Back Home Project
    SenHaiX Mobile PoC Radios SPTT-N60 Are Supporting Thailand Back Home Project on 2021-07-22
    SenHaiX mobile POC radios SPTT-N60 are supporting Thailand Back Home Project,  they are about to transfer COVID-19 patients back to their homes. Tely 360 Co., Ltd from Thailand transferred COVID-19 patients safely and efficiently with their AOC PTT system. Tely 360 AOC PPT system includes ambulance module, ICU module, communication module, and monitoring module, the system can improve the efficiency of rescue teams, prepares patients for rescue, and effectively coordinates the work of rescue teams and medical staffs. The transfer of COVID-19 patients requires a long journey, and there are many uncertainties along the way. Engineers from Tely 360 installed AOC PTT system, SenHaiX SPTT-N60 PoC radio and a in-vehicle camera in the ambulance, therefore the command center can remotely monitor the status of the patient and communicate with the patient, and make the best solution in an emergency. SenHaiX SPTT-N60 is responsible for the communication module in the AOC PTT system. Both the ambulance driver and the patient can talk to the command center in real time through SPTT-N60. Its positioning function can display the location of the ambulance on the map and realizes the real-time dispatch management of the ambulance. The patient will be sent to the nearest hospital instantly, and the patient is prepared for first-aid before the patient arrives at the hospital. (The news and the pictures are from EJanNews on July 21, 2021) It is understood that SenHaiX SPTT-N60 was also involved in the Tham Luang Cave Rescue Mission in 2018 which was called the most difficult cave rescue mission in human history. #COVID19 #SENHAIXN60 #TELY360 #AOC #THAILAND #BACKHOME #AMBULANCE #RESECU
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  • SenHaiX Named National High-Tec Enterprise
    SenHaiX Named National High-Tec Enterprise on 2020-12-02
    The Ministry of Science and Technology of China awarded SenHaiX the title of National High-tech Enterprise, which is considered one of the highest awards for Chinese technology companies. This designation reflects  national recognition of technology and innovations for SenHaiX, demonstrating SenHaiX 's technical expertise and innovation in the field of wireless communications in China. SenHaiX has an independent R&D team, production team and sales team. The factory has passed ISO9001 certification. Its handheld walkie-talkies, mobile walkie-talkies, digital walkie-talkies (DMR) and other products have obtained CE/FCC certifications, it develops anti-explosion, waterproof, Bluetooth programming and intelligent noise reduction functions to meet the needs of various markets and special environments, it provides OEM ODM support too. Technology has accelerated the business development of SenHaiX. We will continue to use leading technology to develop products, improve the quality control system and team, and provide users with better wireless intercom equipments.
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  • Noise Reduction Function Test
    Noise Reduction Function Test on 2020-10-14
    SenHaiX 81-(30)Plus Noise Cancelling Waterproof Two Way Radio Noise Supperssion in Extreme Environments 81-(30)Plus uses an intelligent algorithm to distinguish whether the sound made by the user of the machine is sound, and filters the surrounding sounds. Original intention of development: When users work outdoors or at high altitudes, they are often affected by environmental noise and variable weather. In particular, the huge noise caused by wind makes it difficult for operators to communicate clearly. Therefore, Sennhex engineers decided to develop a noise-reducing walkie-talkie, which can filter the noise and communicate clearly regardless of the environmental noise.
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  • Congratulations to SENHAIX for obtaining multiple utility model patents again!
    Congratulations to SENHAIX for obtaining multiple utility model patents again! on 2020-08-27
    SENHAIX again obtained a number of utility model patent certificates issued by the Chinese State Intellectual Property Office. A walkie-talkie with positioning function for field use A walkie-talkie with alarm device A special walkie-talkie with mounting bracket function A walkie talkie with video playback function for patrol An explosion-proof walkie-talkie with signal amplification function Interactive control software for two-way radio analog signal transmission Intercom programming IOS debugging software Walkie-talkie parameter correction management system Intercom IP interconnection link intelligent distribution system Intercom base station signal remote control system Fujian SENHAIX Electronic Technology Co., Ltd. vigorously implements technological innovation. For many years, it has focused on the design and development of analog 2-way radios, public network 2-way radios, digital 2-way radios, mobile 2-way radios and other professional intercom equipments. It is a company that can independently design, develop, manufacture and sell 2-way radios. SENHAIX has now obtained dozens of patents. These patent achievements have accumulated momentum for the company’s future development, further enhanced the company’s product technology content, enhanced product stability, and enhanced the company’s core competitiveness. Development provides strong scientific and technological support.
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  • SenHaiX 8800 Dual band Walkie talkie Has Been Certified by European CE and American FCC
    SenHaiX 8800 Dual band Walkie talkie Has Been Certified by European CE and American FCC on 2020-08-11
    8800 is a professional dual-band sports walkie-talkie developed and manufactured by Fujian SenHaiX Electronic Technology Co., Ltd. After passing the European CE certification (Certificate Number: TCF-2993CC19 ), it has also obtained the American FCC certification (FCC Identifier: 2AS7F8800 ) recently, now 8800 has obtained access to the European market and American markets as well. The professional dual-band walkie-talkie 8800 has been favored by consumers since it was launched. This walkie-talkie has powerful functions and hardware configuration beyond ordinary commercial walkie-talkies. It not only has the transmit power performance as a commercial professional walkie-talkie, but also supports Bluetooth programming, VHF/UHF dual-band operation, fast pilot function, DTMF encoding, and multiple scanning methods, even includes FM radio function. Why 8800 is called a sports walkie-talkie? This walkie-talkie can easily cope with various harsh environments. The TPU housing case material and waterproof materials make it drop-proof and rain-proof. It’s VOX voice control can achieve automatic switching to send and receive communications which is more practical. In general, 8800 is not only a dual band walkie-talkie, but also a professional sport radio, both in terms of form and function, not only suitable for professional users bur also suitable for HAM and outdoor sports to play.
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