Secondary channel for radio frequency communications
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United States of America Patent
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Oct 17, 2000
Issued Date -
N/A
app pub date -
Apr 29, 1997
filing date -
Dec 4, 1995
priority date (Note) -
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Abstract
A system for radio frequency communications between a first unit and a second unit. The communications are conducted over a first frequency and a second frequency. The first unit and the second unit each transmit and receive communications, including first, second, third and fourth information, in bursts over select time intervals, including a first time interval and a second time interval. The system includes communication between a plurality of wireless handset units and a base unit utilizing a FDD/TDD format.
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