The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 19, 1989
Filed:
Sep. 18, 1987
Applicant:
Inventors:
William B Ahlemeyer, Indianapolis, IN (US);
Ben F McCormick, II, Noblesville, IN (US);
Stephen T Crum, Indianapolis, IN (US);
Assignee:
Uniden America Corporation, Ft. Worth, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03J / ;
U.S. Cl.
CPC ...
455168 ; 455186 ; 455194 ; 455212 ;
Abstract
A multi-band scanning radio receiver operable without reprogramming in a plurality of geographical regions. Digital codes for public-service-band frequency allocations for each of a plurality of geographical regions are stored in a memory which is sequentially accessed to read the digital codes for the frequency allocations for a selected geographical region. A frequency synthesizer loaded with a digital code read from memory performs band switching and supplies tracking signals and a local oscillator signal to multi-band RF amplifier and mixer circuitry.