Frequency Adaptive Communication Systems and Networks in the MF/HF Bands
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Frequency Adaptive Communication Systems and Networks in the MF/HF Bands

Handbook

This Handbook is published to assist planners and decision-makers in the deployment of adaptive MF/HF systems in the fixed service, for both commercial and government users in developed and particularly developing countries. It provides material on current present technological capabilities in the field of adaptive MF/HF communications.

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Chapter
 

Control, including automatic link establishment (ALE) and automatic link maintenance (ALM), taking into account systems in use or standardized You do not have access to this content

English
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Author(s):
ITU

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Central to the concept of automated HF radio is the notion that the HF bearer should provide communications services generally analogous to those provided by other voice and data networks. The client of the HF service should not be required to deal with the peculiarities of the HF medium. This leads to a conceptual structure of the HF controller as depicted below. Although current practice does not universally follow this model, the model does provide a useful framework for this Chapter.