Wireless A to Z pdf

[...]... examiner-coordinator (VEC) Operators can use their station equipment as soon as they see that information about their amateur operator/primary station license grant appears on the amateur service database New operators do not need to have the license document in their possession to commence operation of an amateur radio station Since amateur stations must share the air waves, each station licensee and... for each and every tower/base site There are two versions of this service: one for general aviation and one for commercial aviation General Aviation Air-Ground Service Air-Ground Radiotelephone Service has been available to general aviation for more than 30 years General Aviation Air-Ground systems may operate in the 454.675- to 454.975MHz and 459.675- to 459.975-MHz bands to provide service to private... satellite earth station instead of a radio base station Calls can be placed to any domestic or international location To receive calls aboard aircraft, the passenger must have an activation number In the case of Airfone, an activation number can be obtained by dialing 0 toll-free onboard or 1-800-AIRFONE from the ground For each flight segment, the activation number will be the same However, the passenger... (AMPS) Originally, AMPS operated in the 800-MHz frequency band using 30-kHz-wide channels A variant of AMPS, known as Narrowband AMPS (NAMPS), uses 10-kHz-wide channels and consequently has triple the capacity of AMPS Although AMPS or a variation of AMPS is still around— chances are that your cellular phone allows you to switch between analog and digital mode—its use is rapidly declining in the face... from 54 to 72 Mbps 4 ACCESS POINTS Figure A- 3 An example of a consumer AP is this 5-GHz wireless access point (WAP5 4A) from Linksys, which features antenna with a range of up to 328 feet indoors Enterprise-level APs provide more management features, allowing LAN administrators to remotely set up and configure multiple APs and clients from a central location For monitoring and managing an entire wireless. .. United States or Canada Because there are only 12 channels available for this service, it is not available to passengers on commercial airline flights Commercial Aviation Air-Ground Systems Commercial Aviation Air-Ground Systems may operate on 10 channel blocks in the 849- to 851-MHz and 894- to 896MHz bands These nationwide systems employ various analog or digital wireless technologies to provide telephone... long-distance calling volumes and revenues in part to wireless substitution At least one wireless operator, Cingular Wireless, advertises its nationwide calling plans with the slogan, “Never Pay Long Distance Again.” Because of national advertising and the Internet, consumers all over the country are educated about nationwide rate plans and services enabled by digital technology and the prices of wireless. .. access to e-mail and to data and applications stored on corporate servers are two of the most important uses of PDAs in the enterprise market Surveys of U.S firms indicate that mobile access to e-mail is the top priority There are short-range data transmission technologies that are gaining in popularity: infrared, Bluetooth, and Wireless Fidelity (Wi-Fi) Infrared is currently used in some PDAs to allow... comparison, AT&T’s Inflight Calling costs $2.99 to connect plus $2.99 per minute These rates apply to all data/fax and voice calls Even calls to 800 and 888 numbers—which are normally tollfree on the ground—are charged at the same rate as regular Airfone and Inflight calls No billing ever occurs for the ground party The charges for international calls are higher; both AT&T and GTE charge $5.00 to connect... intercommunication, and technical investigations carried out by amateurs; that is, duly authorized persons interested in radio technique solely with a personal aim and without pecuniary interest.”1 Amateur radio stations are licensed by the FCC and may engage in domestic and international communications— both two-way and one-way Applications for new licenses or for a change in operator class are filed through a volunteer . development tools, administration and management, standards, and reg- ulation. It is designed as a companion to other books you may want to read about wireless, providing clarification of concepts that.