Abstract: A pager receiver includes an addressable data memory for storing sets of digital frequency data for application to a frequency synthesizer which responds to each set of frequency data to tune the pager receiver to a channel or frequency identified by the frequency data, and a process controller which controls both the storing in the memory of the frequency data identifying a plurality of channels or frequencies and the reading out of the frequency data one set at a time in sequence in searching for a paging signal being transmitted to the paging receiver.
Abstract: The external antenna is coupled to the point of ground reference potential of the RF amplifier, which point is in turn connected to the ground reference of the receiver incorporating such amplifier.
Abstract: The mount includes a holder for the receiver, a terminal on the holder for connection to an antenna, and a conductor on the holder which is adapted to be contacted by the clip of the receiver when it is positioned in the holder.
Abstract: Electronic patch circuitry interconnects a wire telephone line with the base station transmitter and receiver of a simplex two-way radio communication system, for causing VOX-type operation with very fast voice-operated keying between transmitter and receiver. The system is operable in a telephone line priority mode in which it responds to telephone line audio signals for keying the transmitter on and the receiver off regardless of whether or not the receiver is on at the time, and is also operable in an "anti-VOX" mode. An automatic telephone line connector circuit responds to telephone ringing signals on the telephone line at the base station. The circuit then transmits a coded signal to a remote radio transceiver, which can return a signal to "answer" the base station telephone and connect it to the patch circuitry. Automatic dialing means are provided for initiating a telephone call from the remote radio transceiver.
Type:
Grant
Filed:
August 6, 1975
Date of Patent:
March 15, 1977
Assignee:
Reach Electronics Inc.
Inventors:
William L. West, Jr., William Sherman, III