The Cellular Connection 1 phần 9 docx

... installation, the The Cellular Connection: A Guide to Cellular Telephones, Fourth Edition. Robert A. Steuernagel Copyright  2000 John Wiley & Sons, Inc. ISBNs: 0-4 71- 316 52-0 (Paper); 0-4 71- 20340-8 ... places the transceiver close to the antenna, which is usually mounted toward the rear of a vehicle. This proximity allows the length of the cable that connects the t...

Ngày tải lên: 07/08/2014, 21:20

... and the voice from the other end of the connection usually came through a loudspeaker. You couldn’t dial a call; instead the mobile operator at the other end of your radio link established the connection ... and interference from other phone systems was a common problem. Even so, the demand for mobile phone service was greater than could be met. In the late 19 60s and th...

Ngày tải lên: 07/08/2014, 21:20

... a nonwire- line, and the other to a wireline, the B block. The lower band (824—8 49 MHz) is for use by cellular phones to transmit to cell sites, and the upper one (8 69 894 MHz) is for use by ... 0-4 71- 20340-8 (Electronic) 9 Figure 2.2 CELLULAR FREQUENCIES Cellular frequencies range from 824 to 894 MHz, with a gap between 8 49 and 8 69 MHz for use by other communication...

Ngày tải lên: 07/08/2014, 21:20

... 41 45, 52—55, 60, 64—73, 89, 95 96 , 10 1 10 2, 10 5 10 6, 11 3 11 5, 12 1, 12 2, 12 6, 12 7. See also Service provider CDMA, 11 4, 11 5, 12 1, 12 2 CDPD, 93 , 12 2 Cell, 4—7, 93 , 10 2, 11 0 11 1, 12 2, 12 3, 12 6 Cellphone, ... 73, 89, 95 , 10 7 10 9, 12 4 Dial tone, 53, 92 , 95 , 11 9 Digital, 24, 27, 92 93 , 11 2, 11 3 11 6, 12 1, 12 2, 12 4, 12 7 Dropo...

Ngày tải lên: 07/08/2014, 21:20

... sales commissions paid to them by the carrier for cellular subscriptions to ‘‘buy down’’ the retail price of the cellular phone, so that the price of The Cellular Connection: A Guide to Cellular Telephones, ... price, the phone and service will be much more valuable to you if you’ve taken the time to go over everything on the list. 30 GETTING CELLULAR SERVICE Table...

Ngày tải lên: 07/08/2014, 21:20