1 Increased requirements in the HF
fixed service
1.1
Introduction
1.2
Disaster relief support by HF radiocommunication systems
1.2.1
Background
1.2.2
A case study in requirements surge: 2004 Indian Ocean Tsunami
1.2.3 Effect of bands identified in
Resolution 544 (WRC-03)
1.3
Emergence of advanced HF technologies
1.3.1
Background
1.3.2
Establishing
fixed and mobile usage considering advanced technologies
2
General information on HF usage
2.1
Introduction
Typical technical parameters
2.2
Background
2.3
Specific features of the HF range
2.3.1
Groundwave
2.3.2
Skywave
2.4
Assessment of usage by one administration
2.4.1
Background
2.4.2
Requirements
2.5
Assessment of usage by another administration
2.5.1 Frequency sharing scenario
2.5.2 Impact of frequency change on radio
links operation in the range 4-10 MHz
2.5.3 Spectrum effectiveness
2.5.4
Reduction of transmitting stations power
2.5.5 Irregularity of frequency
allocations
Annex 1