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A Motorola 2900 "Bagless" Bag Phone which has been removed from its bag, illustrating how the parts, including the optional battery pack, interconnect. At the far left is the handset hang-up cup, which does not electrically connect to the phone. Motorola introduced the Bag Phone line in 1988. [1]
A DynaTAC 8000X; the first commercially available mobile phone from 1983. Electrical engineer Martin Cooper of Motorola made the first publicized handheld mobile phone call on a prototype DynaTAC model on April 3, 1973. This is a reenactment in 2007. The DynaTAC is a series of cellular telephones manufactured by Motorola from 1983 to 1994.
The StarTAC is a series of mobile phones released by Motorola starting in 1996. It is the successor of the MicroTAC, a semi- clamshell design first launched in 1989. [ 2] Whereas the MicroTAC's flip folded down from below the keypad, the StarTAC folded up from above the display. The StarTAC was among the first mobile phones to gain widespread ...
A cordless telephone or portable telephone has a portable telephone handset that connects by radio to a base station connected to the public telephone network. The operational range is limited, usually to the same building or within some short distance from the base station. A cordless telephone differs functionally from a mobile telephone in ...
MTC 3600 SmartNET/SmartZone 4.1 Controller (Prime & Remote) PSC 9600 Astro25 6.x Site Controller (Remote Sites) MTC 9600 ASTRO25 Site Controller (Prime Sites) GCP 8000 ASTRO25 Site Controller (Prime & Remote Sites) MZC 3000 SmartZone 4.1 Zone Controller (4.1 Master Sites)
Overview. CT2 is a digital FDMA system that uses time-division duplexing technology to share carrier frequencies between handsets and base stations. Features [1] [2] [3] of the system are: Standardized on 864–868 MHz. 500 frames/second (alternately base station and handset) 100 kHz carriers. 32 kbit/s ADPCM voice channel compression.
A rugged smartphone is a specific type of toughened smartphone which is designed to be completely sealed within a durable housing to protect it against damage from water, shock, dust, and vibration. [ 1][ 2][ 3] Rugged smartphones are designed to survive extreme weather and temperatures, accidental damage, and rough handling; making them ideal ...
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