• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
Table 1-21.New Style Military Fuse Identification
Conversion and Equivalent Tables

Neets Module 19-The Technicians Handbook
Page Navigation
  74    75    76    77    78  79  80    81    82    83    84  
1-79 Commercial fuse identification and a fuse cross-reference can be found in NEETS, Module 3, Introduction to Circuit Protection, Control, and Measurement; and in Military Standard 1360A (MIL- STD-1360A). These will assist you in selecting or identifying fuses. Circuit breakers are too numerous to cover in this text. They are used in houses, vehicles, ships, and airplanes. Military Standard 1498 (MIL-STD-1498) contains information to help you select or identify circuit breakers. Classification of Rf Emissions The system of designating rf emissions is arranged according to modulation type, mode, and supplementary characteristics. For example: A3B indicates amplitude modulation, telephony, two independent sidebands, and a suppressed carrier. Table 1-23 will assist you in breaking down the emission classification code. Table 1-23.—Emission Types Emission Type Modulation Types Amplitude A Frequency F Pulse P Modulation (Transmission Mode) None 0 Telegraphy (keyed r-f carrier) 1 Telegraphy (tone) 2 Telephony 3 Facsimile 4 Television 5 Four Channel Diplex Telegraphy 6 Multichannel Voice Frequency Telegraphy Complex Forms 7 Supplemental Characteristics Double Sideband none Single Sideband -reduced carrier A -full carrier H -suppressed carrier J Two Independent Sidebands -suppressed carrier B Vestigial Sideband Pulse C -amplitude modulated D -width modulated E -phase modulated F -code  modulated G *Capital or lower case letter **Commercial practice is to reduce carrier 20 dB, to provide sufficient carrier for receiver afc lock-in, where afs receivers are used. Note: a number preceding the emission designation indicates the bandwidth in kilohertz.






Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.