H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/12 (2006.01) H03D 7/18 (2006.01) H04B 1/40 (2006.01)
Patent
CA 2124878
A transmitting and receiving system having two or more radios, each capable of transmitting and re- ceiving a transmission signal on two or more radio frequencies where a first radio transmits on a selected frequency at a predetermined time interval and a second radio recovers the transmitted signal. The second radio has a first intermediate frequen- cy generator which generates an intermediate fre- quency signal which is substantially equal to an integer multiple of the channel spacing whereby an image response corresponding to the selected fre- quency is separated by twice the intermediate fre- quency signal from the selected frequency. Thus, locations for the two or more transmission frequen- cies can be selected so as not to be located on the image responses corresponding to any and all of the two or more transmission frequencies.
Gowling Lafleur Henderson Llp
Vtech Communications Ltd.
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