Table of Contents

Foreword
1 Scope
2 General requirements
  2.1 Construction
  2.2 Controls and indicators
  2.3 Operational precautions
  2.4 Operational and maintenance instructions
  2.5 Safety precautions
  2.6 Warming-up period
  2.7 Operational facilities
3 Test conditions
  3.1 General
  3.2 Test power supply source
  3.3 Normal test conditions
  3.4 Extreme test conditions
  3.5 Procedures of tests at extreme temperatures
  3.6 Environmental tests
  3.7 Standard test signals
  3.8 Application of test signals for integrated
      equipment and separate transmitters/receivers
  3.9 Artificial antennas
  3.10 Connection of test signals for radiotelex
       modems
4 Integrated equipment - transmitting part: technical
  and operational requirements
  4.1 General
  4.2 Frequencies and classes of emission
      (IMO COM.30/WP 4)
  4.3 RF output power
  4.4 RF output power stability
  4.5 Residual RF noise power at the receiver input
  4.6 Antenna tuning
  4.7 Protection of transmitters
  4.8 Continuous operation
  4.9 Unwanted emissions
  4.10 Residual frequency modulation
  4.11 Frequency error
  4.12 Rise time
  4.13 Fall time
5 Integrated equipment - receiving part: technical
  and operational requirements
  5.1 Frequencies and classes of emission
  5.2 Calling sensitivity
  5.3 Adjacent channel selectivity
  5.4 Automatic gain control (AGC) or limiter response
  5.5 Interference rejection and blocking immunity
  5.6 Co-channel rejection
  5.7 Intermodulation immunity
  5.8 Errors due to vibration
  5.9 Protection of input circuits
6 Radiotelex modems - modulating part: technical and
  operational requirements
  6.1 General
  6.2 Output signals
  6.3 Binary digital output
  6.4 Audio output
  6.5 Activation of an associated transmitter
7 Radiotelex modems - demodulating part: technical and
  operational requirements
  7.1 Input signal
  7.2 Calling sensitivity
  7.3 Dynamic range
  7.4 Activation or deactivation of an associated
      receiver
8 RF transmitters for use in combination with
  radiotelex modems: technical and operational
  requirements
  8.1 Frequencies and classes of emission
  8.2 RF output power
  8.3 RF output power stability
  8.4 Residual RF noise output power
  8.5 Antenna tuning
  8.6 Protection of transmitters
  8.7 Continuous operation
  8.8 Unwanted emissions
  8.9 Residual frequency modulation
  8.10 Frequency modulation due to vibration
  8.11 Frequency error
  8.12 Rise time
  8.13 Fall time
  8.14 Input signals
  8.15 Input level
9 RF receivers for use in combination with
  radiotelex modems: technical and operational
  requirements
  9.1 General
  9.2 Frequencies and classes of emission
  9.3 Method of tuning
  9.4 Frequency conversion
  9.5 Frequency modulation due to vibration
  9.6 Maximum usable sensitivity
  9.7 Adjacent channel selectivity
  9.8 Two-signal tests of selectivity
  9.9 Intermodulation
  9.10 Receiver's line output
  9.11 AGC characteristics (attack and decay times)
  9.12 Protection of input circuits
  9.13 Tuning error and tuning drift
  9.14 Spurious response rejection
  9.15 Operation of the receiver during ARQ operation
10 Station requirements
  10.1 General
  10.2 Maintenance of phasing
  10.3 Time-to-answer a call
  10.4 Station delay time
  10.5 Scanning receivers
  10.6 Station requirements
11 Interference
  11.1 General
  11.2 Conducted spurious emission into the mains
12 Operational procedures
  12.1 Objective
Annex A: Bibliography
History

Abstract

States the minimum requirements for Radiotelex equipment for use on board ships. Requirements include the relevant provisions of the Radio Regulations and standards of performance for shipborne MF/HF radio installations for Narrow Band Direct Printing (NBDP) equipment operating in the Global Maritime Distress and Safety System (GMDSS), and of the Res. A 613 and Res. A 569 performance standards as adopted by the International Maritime Organization (IMO).

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	RES 1