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5541976 |
Communications system for integrating a paging system with cellular radio telephones
The present invention relates to a cellular mobile radio telephone system which incorporates an independent paging capability with an existing mobile telephone by taking advantage of call...
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4457018 |
Radio telephone systems and method for use in vehicles
A vehicle radio telephone system is constructed to talk between a vehicle and a fixed station through any one of a plurality of radio channels. Upon degradation of a talking condition during...
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4281413 |
Multichannel radio telephone system
Phantom signals resulting from intermodulation between a busy channel and an idle channel with idle tone cause scanning radio stations to lock on a phantom idle channel and miss communications....
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4010461 |
Alerting system with dual-address memory
A dual address paging receiver is described having page memory for automatically storing a page in the mode addressed if the user does not reset the receiver within a prescribed time interval after...
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4010460 |
Alerting system with memory
A paging receiver is described having page memory for automatically storing a page if the user does not reset the receiver within a prescribed time interval after an alert signal is started. After...
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