CONTENTS

Policy on Intellectual Property Right (IPR)
 1 Introduction
 2 Definition and analysis of requirements
        2.1 Preliminary system design and feasibility study
        2.2 Trunking/routing plans
       2.3 Frequency plan
        2.4 Personnel manning requirements
        2.5 Support requirements
        2.6 Modes of communications required (voice, data, and image)
        2.7 Required S/N
        2.8 Modulation types and data rates
        2.9 Required circuit reliability
       2.10 Terminal facilities required
       2.11 Required system lifetime of service
       2.12 Facilities site requirements
       2.13 Environmental impact assessments
       2.14 Required operational date
3 Practical aspects
        3.1 Start-up
                  3.1.1 Project management estimates
                  3.1.2 System engineering estimates
                  3.1.3 Real estate/land acquisition estimates
                  3.1.4 Site preparation
                  3.1.5 Construction or modifications to equipment building(s)
                  3.1.6 Construction or modifications to the site’s primary and auxiliary power system
        3.2 Equipment
                  3.2.1 Equipment in general
                  3.2.2 Transmitter/receiver or transceivers
                  3.2.3 Antenna components
                  3.2.4 Antenna switches
                  3.2.5 Transmission lines
                  3.2.6 Terminating devices
                  3.2.7 Multicouplers
                  3.2.8 RF patching
                  3.2.9 Terminal equipment
                  3.2.10 Voice terminals
                  3.2.11 Audio patching equipment
d.c. patching facility
Spare parts
                  3.2.12 Installation
 4 System analysis and design
        4.1 Approximate geographical coordinates for each station
        4.2 Tentative site selection
        4.3 Path operational parameters
        4.4 Propagation forecast
        4.5 Equipment selection
                  4.5.1 Typical HF systems configurations
Continuous wave (CW)
Single sideband (SSB) voice
Multi‑sited systems medium power station
Transmitter subsystem
Receiver subsystems
Transceiver systems
                  4.5.2 Antenna subsystem
                  4.5.3 Voice frequency interface equipment
                  4.5.4 Transmission lines
Coaxial line
Open wire line
        4.6 Antenna specifications
                  4.6.1 Antennas and ancillary equipment
                  4.6.2 Antenna specifications
        4.7 Equipment performance requirements
                  4.7.1 Transmitting subsystem
Typical HF transmitters
Typical characteristics of low‑power HF transmitters
Installation
Operation
                  4.7.2 Receiving subsystem
Single or multiple channel receiver
                  4.7.3 HF transceivers
Typical HF transceivers
                               4.7.3.1 Ancillary HF components
Ancillary HF components
 5 Site/field surveys
        5.1 Topography
Site terrain features
Land area requirements
        5.2 Radio transmitting station site choice
        5.3 Radio receiving station site choice
                  5.3.1 Environmental RF noise receiving station site
Site separation
                  5.3.2 Earth constants
                  5.3.3 General site requirements
Availability
Suitability
Accessibility
Security
                  5.3.4 Site survey procedures
                  5.3.5 Construction plans
                  5.3.6 HF antenna layout
Reflection zone areas
Mutual coupling
Other antenna siting considerations
                  5.3.7 Typical fixed site layout
                  5.3.8 System test and evaluation plans
 6 System test
System performance:
Network performance:
Data and message throughput:
Power considerations:
Review site security plan:
 7 Conclusion