Telecommunications – Carrier wave repeater or relay system – Monitoring
Patent
1988-05-16
1991-06-11
Olms, Douglas W.
Telecommunications
Carrier wave repeater or relay system
Monitoring
455 10, 455 11, 455 54, 455 33, 455 18, H04B 726
Patent
active
050239309
ABSTRACT:
An apparatus and method for selecting a number of cellular radio channels to be boosted in a given geographical area provides either F1-F1 or F1-F2 operation. The signals can be boosted at the same frequency with input to output isolation being achieved by the use of directive transmit and receive antennas physically positioned to achieve sufficient isolation. Each signal is individually filtered, amplified, and recombined for transmission. Any number of signals may be accommodated depending upon the number of retransmission channels available. Apparatus is also provided to retransmit a signal at a different frequency from that at which it is received. A tag, typically an audio tone or diminished signal amplitude gap, may be selectively applied to boosted retransmitted signals in order that they may be recognized as such.
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Olms Douglas W.
Orion Industries, Inc.
Smith Ralph
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