December 1999
Intermediate to advanced
258 pages
5h 23m
English
Content preview from Essential Guide to RF and Wireless, TheBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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MOBILE TELEPHONY
Mobile Telephony Choices
Different Technologies
There are several choices for mobile telephone service in the United States. Some of these services differentiate themselves by offering additional features compared to "standard" mobile service, while others are the natural evolution of technology over time, taking advantage of newer digital technology.
One of the lesser known mobile services available is something called Specialized Mobile Radio or SMR. SMR, which operates in two different frequency bands between 806 and 866 MHz, was originally intended for use as a wireless dispatch service (think taxi cabs). Today, it has evolved into a combination dispatch and mobile phone service. This combination service distinguishes SMR ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.