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jemima ohiman

on 8 October 2012

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Transcript of beeper

Beeper A pager (often called a beeper) is a simple personal telecommunications device for short messages Beepers
Alphanumeric Pagers
Response pagers
Two way pagers 'pagers are still in use today' The U.S. paging industry generated
$2.1 billion in revenue in 2008,
down from $6.2 billion in 2003 Many paging network operators now
allow numeric and textual pages to be
submitted to the paging networks via email

In the United States, pagers typically
receive signals using the FLEX protocol
in the 900 MHz band. Commercial paging
transmitters typically radiate 1000
watts of effective power

Other radio bands used for pagers
include the 400 MHz band, the VHF
band, and the FM commercial
broadcast band (88-108 MHz) The growing popularity of cellphones in the
early 21st century was accompanied
by a corresponding decline in pager use by
the general population The first practical pager was introduced in 1950 by physicians in the New York City area.
Reevesound Company of New York jemima
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