Intermediate frequency receiver apparatus

Details Intermediate frequency receiver apparatus Intermediate frequency receiver apparatus

1994-06-01

1997-03-18

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

375350, 455302, H04B 1500, H04K 100, H04L 2730

Patent

active

056129718

ABSTRACT:
A transmitting and receiving system having two or more radios, each capable of transmitting and receiving 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 frequency generator which generates an intermediate frequency signal which is substantially equal to an integer multiple of the channel spacing whereby an image response corresponding to the selected frequency is separated by twice the intermediate frequency signal from the selected frequency. Thus, locations for the two or more transmission frequencies 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.

REFERENCES:
patent: 4231116 (1980-10-01), Sekiguchi et al.
patent: 4476575 (1984-10-01), Franke et al.
patent: 4542531 (1985-09-01), Fukumura
patent: 5201064 (1993-04-01), Bauerschmidt

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