Radio telephone system

H - Electricity – 04 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

325/17

H04B 7/12 (2006.01)

Patent

CA 1042989

ABSTRACT A portable duplex radio telephone system includes base station transmitters having a predetermined base transmission range, and a plurality of portable or mobile units each having a predetermined maximum transmission range shorter than the base transmission range. Satellite receivers are deployed about each base station for receiving transmissions from the portable units. The base station transmitters transmit signals on a signalling channel and on at least one communications channel. The portable receivers have means for scanning the base station transmitter signalling frequencies and for tuning to the signalling frequency associated with the strongest signalling signal received from the base transmitter. When communication is initiated, the portable transmitter and receiver are automatically retuned to one of the communications channels as determined by the strongest received signalling frequency and by channel availability. Means are also pro vided to continuously locate a portable unit and switch the operating frequency thereof as the portable unit moves between base station transmitter coverage areas. Further means are provided to reduce the output power of each portable transmitter to the minimum satisfactory level in order to reduce battery drain and interference.

288271

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Radio telephone system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Radio telephone system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio telephone system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-691324

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.