FIXED AND BASE STATION FM RECEIVERS - LAW ENFORCEMENT STANDARDS PROGRAM

• NCJ Number: 29643
• Author(s): M C ARTHUR; L F SAULSBURY; W W SCOTT JR; J F SHAFER
• Date Published: 1975
• Length: 34 pages
• Sponsoring Agency: US Dept of Justice; National Institute of Standards and Technology (NIST); US Dept of Justice NIJ Pub
• Corporate Author: US Dept of Commerce
• Sale Source: Superintendent of Documents, GPO; National Technical Information Service; National Institute of Justice/
• Language: English
• Country: United States of America

Annotation

THIS TECHNICAL DOCUMENT PRESENTS MINIMUM PERFORMANCE REQUIREMENTS AND TEST METHODS FOR FREQUENCY MODULATED, FIXED AND BASE STATION RECEIVERS FOR USE BY LAW ENFORCEMENT AGENCIES.

Abstract

IT WAS DEVELOPED BY THE LAW ENFORCEMENT STANDARDS LABORATORY OF LEAA. FIFTEEN DIFFERENT ATTRIBUTES INCLUDING SINAD SENSITIVITY, INTERMODULATION ATTENUATION, AUDIO DISTORTION, AND AUDIOFREQUENCY RESPONSE ARE LISTED WITH THEIR PERFORMANCE REQUIREMENTS AND TEST METHODS FOR THREE TYPES OF RECEIVERS, WHICH ARE IDENTIFIED BY THEIR MEGAHERTZ BAND OPERATING FREQUENCIES (400-512, 150-174, AND 25-50). DESCRIPTIONS OF THE MOST CRITICAL ITEMS OF TEST EQUIPMENT NEEDED TO MAKE THE REQUIRED MEASUREMENTS ARE PROVIDED. TEST METHODS INVOLVE DETERMINING A VALUE FOR EACH OF THE CITED PERFORMANCE REQUIREMENTS. WHILE THE STANDARD SHOULD BE OF VALUABLE ASSISTANCE IN THE SELECTION AND PROCUREMENT OF FIXED AND BASE STATION FM RECEIVERS, THE NECESSARILY TECHNICAL NATURE OF THE STANDARD AND ITS FOCUS AS A PROCUREMENT AID MAKE IT OF LIMITED USE TO THOSE WHO SEEK GENERAL INFORMATION ON FIXED AND BASE STATION FM RECEIVERS. APPENDIXES CONTAIN A BIBLIOGRAPHY AND TABULATED MINIMUM PERFORMANCE DATA FOR ALL THREE RECEIVER TYPES. IT IS NOTED THAT THE PERFORMANCE REQUIREMENTS ARE IN AGREEMENT WITH THOSE GIVEN IN THE FEDERAL COMMUNICATIONS COMMISSION REGULATIONS. (SNI ABSTRACT)