NCJ Number
15244
Date Published
1974
Length
37 pages
Annotation
MINIMUM PERFORMANCE REQUIREMENTS AND TEST METHODS FOR FREQUENCY MODULATED TRANSMITTERS MOUNTED IN LAW ENFORCEMENT VEHICLES.
Abstract
THIS STANDARD APPLIES TO TRANSMITTERS WHICH EITHER DO NOT HAVE SPECIAL SUBSYSTEMS SUCH AS SELECTIVE SIGNALING OR VOICE PRIVACY, OR IN WHICH SUCH SUBSYSTEMS ARE BY-PASSED OR DISABLED DURING TESTING FOR COMPLIANCE WITH THIS STANDARD. SIXTEEN PERFORMANCE CHARACTERISTICS GROUPED UNDER THE GENERAL HEADINGS OF RADIO FREQUENCY CARRIER, AUDIO-FREQUENCY MODULATION, ELECTROMAGNETIC COMPATIBILITY AND ENVIRONMENTAL CHARACTERISTICS ARE DEFINED FOR THREE TYPES OF TRANSMITTERS WHICH ARE IDENTIFIED BY THEIR MEGAHERTZ BAND OPERATING FREQUENCIES (400-512, 150-174, AND 25-50). APPENDIXES CONTAIN A BIBLIOGRAPHY AND TABULATED MINIMUM PERFORMANCE DATA FOR ALL THREE TRANSMITTERS TYPES. IT IS NOTED THAT THE PERFORMANCE REQUIREMENTS ARE IN AGREEMENT WITH THOSE GIVEN IN THE RULES AND REGULATIONS PUBLISHED BY THE FEDERAL COMMUNICATIONS COMMISSION. (SNI ABSTRACT)