Marshall Tutor Brown

US Patent:

40631796, Dec 13, 1977

Filed:

Jul 21, 1976

Appl. No.:

5/707387

Inventors:

Marshall M. Brown - San Marino CA

Assignee:

Craig Corporation - San Marino CA

International Classification:

H04B 132

US Classification:

325470

Abstract:

A radio broadcast receiver is disclosed for sequentially scanning and monitoring a plurality of preselected broadcast channels to determine the presence of a radio signal in any one of the preselected broadcast channels. Selector means are provided for each preselected channel to enable the user to individually select the mode of operation for each preselected channel. Three modes of operation are provided for each channel as follows: (1) the scan mode; (2) the bypass mode; and (3) the select mode. Structurally, the receiver comprises a two pole, three-position switch associated with each channel. With the switches in their "scan" position, the receiver automatically scans each channel in sequence, stopping only on a channel which is broadcasting, and resumes scanning when such station terminates broadcasting. If any switch is moved to a second "bypass" position, the scanning proceeds as above but without stopping on the bypassed channel. The third position, called the "select" position, permits selection of a subgroup of one or more channels to be scanned.