Radio communications receivers

Pulse or digital communications – Repeaters – Testing

Patent

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Details

375104, 455304, 455312, H04B 110

Patent

active

045326363

ABSTRACT:
In radio communications receivers for use on frequency hopping radio communications networks, the received signal in each hop period is analyzed and assigned a quality value. If more than one signal is present during the hop period it is determined that more than one network has changed to the same frequency. Similarly if the received signal is out of synchronism it is determined that more than one network has changed to the same frequency. When more than one network has changed to the same frequency, the received signal is not output by the receiver but is replaced by an earlier (or later) received signal.

REFERENCES:
patent: 2996576 (1961-08-01), Dolby
patent: 3347984 (1967-10-01), Holmberg
patent: 3688039 (1972-08-01), Ishiguro
patent: 3700812 (1972-10-01), Springett
patent: 3824620 (1974-07-01), Langer
patent: 3947636 (1976-03-01), Edgar
patent: 4291405 (1981-09-01), Jayant et al.
patent: 4376289 (1983-03-01), Reitmeier et al.
patent: 4398296 (1983-09-01), Gott et al.

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