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SELECTIVE AUDIO RELAY Disclosure Number: IPCOM000008199D
Original Publication Date: 1997-Jun-01
Included in the Prior Art Database: 2002-May-27
Document File: 2 page(s) / 70K

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Joseph G. Markovich: AUTHOR


The system would consist of: a two-way conventional, direct only configuration.

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MOTOROLA Technical Developments


by Joseph G. Markovich


The system would consist of: a two-way conventional, direct only configuration.


  Many two-way radio users are licensed to operate on a single frequency. They may also operate with a mobile radio for normal vehicle operation, and with a portable radio when away from the vehicle. At times, when the user is away from the vehicle using the portable, there is a need for momentary high power operation to communicate to a second user or group of users. This high power operation is not possible with the portable. Other user/s between user 1 and 2 may be used to relay the message. This relay mechanism can cause the message to be delayed indefmitely due to human error or misun- derstood by incorrectly relayed information. The user could also return to the vehicle and use the higher power mobile, although this would require leaving their current location or leaving repeatedly if more than one message needs to be sent. Since the user is licensed for only one frequency, this

prevents normal repeater operation or vehicular repeater operation.


  This invention would allow a user to have their message re-broadcast at a higher RF level on the same frequency (see Figure 1). To operate the sys- tem, user 1 would depress a special F'lT or send a signaling sequence on frequency A which user l's mobile will interpret as a special PlT. This special PTT will activate the...