Retail Catalog of cell phone jammer

Retail Catalog ofcell phone jammer
CDMA (Code-Division Multiple Access, Code Division Multiple Access), which is a branch of digital technology - spread spectrum communication technology to develop a new and sophisticated wireless communications technology. With the use of time-division Multiple Access (TDMA, Time Division Multiple Access) and GSM different, CDMA does not assign to each caller a certain frequency, but to use every channel can provide full spectrum. CDMA cell phone to use for each group of quasi-random number sequence encoding. Workshop management ofcell phone jammer plays an important role in manufacturingcell phone jammer.
CDMA technology has undergone several stages of standardization. IS-95 series of standards is the first release cdmaONE standard, widely used around the world truly the first CDMA standard is IS-95A, the standard supports 8K encoding voice services. Were subsequently published in the 13K standard voice encoder TSB74 support the 1.9GHz CDMA PCS system STD-008 standards, including 13K encoded voice quality of service has been very close to the wired telecell phone voice quality. With the demand for mobile data services growth in February 1998, Qualcomm announced the IS-95B standard for CDMA-based platform. CDMA IS-95B provides system performance, and increase the user's mobile communication device data traffic, providing 64kbps data service support. The specific power supply is not needed for the detector ofcell phone jammerintelligent system.
CDMA technology standardization, and promote this technology in the world-wide application. Currently in the United States, South Korea, Japan and other countries, CDMA technology has been a large-scale applications. In some European countries, some operators have built a CDMA network. Future global CDMA market, the Chinese mainland's growth potential. PHS (Personal Handy-cell phone System, low-power cell phones), in the domestic nickname "PHS." Earlier by the Japanese in accordance with national conditions (a large majority of local population density and mobility of the population of small features) developed, and in 1996 the market. The system's main feature is the use of FDD / TDD multiple access methods, base and mobile transmit power is very low, the base station is only 500 mW transmit power, the cell phone is only 10 mW transmit power, the transmission power is small, so small informed the standby time and talk time is far superior to the current GSM and CDMA cell phones. Maintenance of adapter of cell phone jammer is very important.
A charge may be 5-8 hours of talk time or 720 hours standby; because the radius of the small frequency reuse, where the unit area can provide more channels and accommodate more users, but also has resulted in every 200-500 m on need to build a base station, the number of sites used by many high-speed mobile wireless channel environment will cause frequent switching, resulting in dropped calls and call quality decline, to achieve greater cost of roaming, network maintenance costs while also expanding rapidly with network size growth. Third generation mobile communication system in the international community collectively referred to as IMT-2000, referred to as 3G, the International Telecommunication Union (ITU) in 1985 proposed work in the 2000MHz band, expected around 2000, the commercial system. At that time the future of land mobile communication system called (FPLMTS), 1996, officially changed its name to IMT-2000. The warehouse needs more room to accommodate more mobile phone jammer.
With the first generation analog mobile communications (such as TACS and AMPS) and second-generation digital mobile communication systems (such as GSM and CDMA, etc.) compared to the third generation of the most important feature is to provide mobile multimedia services, the design goal is to provide greater than the second-generation system system capacity, and better communication quality, and to be able to better achieve global scale and to provide users with seamless roaming, including voice, data and multimedia, including a variety of business, while also consider the second-generation system with the existing good compatibility. Thecell phone jammersystem has the real-time inquiry function ofcell phone jammer.