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Motorola Bag Phone
The Motorola Bag Phone is the colloquial name for a line of personal transportable cellular telephones manufactured by Motorola, inc. from 1990 to 2000.
==Description==
Motorola introduced the Bag Phone line in 1990.〔(Motorola America Series 820 Bag Phone eBay listing ). eBay user "lyndsay789". eBay. 2013-08-23. (Archived by WebCite® at http://www.webcitation.org/6J60tLPIZ)〕 These phones offered more durability and higher power output (up to 3 watts) than more conventional cell phones of the time, such as Motorola's own DynaTAC and MicroTAC handheld phones, making them popular for truckers, boaters, and people in rural areas. Because of their durability, many examples of these phones are still in working order today.
The Bag Phones are a derivative of the Motorola Tough Talker series of transportable phones, which in turn descended from the DynaTAC car phones introduced in 1984. All of these phones feature a modular design in which the handset attaches to the transceiver, which is then powered by either a vehicle's power system (in the car phones) or a battery pack (in the transportables). By reducing the size and weight of the transceiver and battery pack, and introducing more fashionable leather bags in which to contain them, Motorola was able to make them more marketable to the average cellular phone consumer, and hence the Bag Phone.
The handset consists of a digital numeric or alphanumeric display with Pwr (indicating the phone is turned on; indicated by a dot in some models), InUse (indicating that a call is in progress), NoSvc (cannot receive a cellular signal and is unable to make or receive calls), and Roam (accessing a cellular system other than your home system) indicators, a numeric keypad with other buttons for different functions (depending on the model), and a loudspeaker for the ringer and hands-free use. This plugs into the transceiver, which also houses connections for a removable "rubber duck" antenna, and the power supply header which plugs into a 12 volt automotive outlet and an optional 12 volt sealed lead-acid battery. The battery provides up to 2.5 hours of talk time and 48 hours of standby time. All of these parts are put together in a specially designed bag made by either Caseworks, Inc. of Chicago, Illinois, or Service Manufacturing Corporation of Aurora, Illinois. These phones can also be permanently installed in a car. The only Bag Phone to deviate from this architecture was the Power PAK, which placed the controls and display on the transceiver and used an LED display similar to that used in some DynaTAC and MicroTAC phones.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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