FS-1045A: Scope

1. SCOPE. The purpose of this standard is to facilitate interoperability between telecommunication facilities and systems of the Federal Government, and compatibility of these facilities and systems at the high frequency (HF) radio over-the-air interface with data processing equipment (systems) of the Federal Government.

This standard specifies automated HF radio features such as frequency scanning, selective calling, automatic link establishment (ALE), link quality analysis (LQA), and sounding. The criteria contained herein are considered to be the minimum essential requirements for acquisition of ALE in Federal radios.

1.1 Limitations. Companion standards specify additional automated HF radio features.

• FED-STD-1046 HF Radio Automatic Networking, includes polling, connectivity exchange, and enhanced LQA.
• FED-STD-1047 HF Radio Automatic Store-and-Forward, includes message store-and-forward and network coordination and management.
• FED-STD-1048 HF Radio Automatic Networking to Multiple-Media, includes features to interface with other types of communications systems.
• FED-STD-1049 HF Radio Automatic Operation in Stressed Environments, includes linking protection which relates to link authentication, address protection, antispoofing, encryption, and anti-interference.
• FED-STD-1050 HF Radio Baseline Parameters, defines the minimum performance requirements to enable the radio to support automated operations.
• FED-STD-1051 HF Radio System Controller Interface, defines the functional interfaces both for radio control and for higher level functions.
• FED-STD-1052 HF Radio Modems, includes high performance modems, minimum mandatory interoperability modes, and an automatic error-free message delivery system.

1.2 Applicability. This standard shall be used by all Federal departments and agencies in the design and procurement of medium frequency (MF) and HF radio systems employing ALE. This standard is mandatory only for those MF and HF radio systems which require ALE. This standard is intended to assure interoperability among Federal MF and HF radio systems employing ALE. This standard shall specify equipment that shall be interoperable with equipment currently existing in the Federal inventory. The standard shall be used in the planning, design, and procurement, including lease and purchase, of all new data communications systems that utilize the HF radio media.

All Federal departments and agencies shall use the mandatory requirements contained herein. Appendix A is a nonmandatory section that contains technical criteria for basic MF and HF radio equipment and is provided as a suggested minimum quality radio to support the ALE and future automated radio features.

This standard is mandatory within the Federal Government in the design and development of new MF and HF ALE radio equipment. It is not intended that existing equipment and systems be immediately converted to comply with the provisions of this standard. New equipment and systems and those undergoing major modification or rehabilitation shall conform to this standard.

1.3 Purpose. The purpose of this standard is to improve the Federal acquisition process by providing Federal departments and agencies a comprehensive, authoritative source for ALE in HF radio. This document establishes technical parameters, in the form of mandatory standards and optional design objectives (Dos) that are considered necessary to ensure interoperability of new long-haul and tactical radio equipment in the MF band and in the HF band. This document was developed in accordance with the "Statement of Requirements (SOR) for the Development of a Family of Federal Standards for Automated High Frequency Radio" to provide communications interoperability and to satisfy the requirements of Federal departments and agencies. It is also the purpose of this document to establish a level of performance of new radio equipment considered necessary to satisfy the requirements of a majority of users. These technical parameters represent minimum interoperability and performance standards. The technical parameters of this document may be exceeded in order to satisfy certain specific requirements, provided that interoperability is maintained. That is, the capability to incorporate features such as additional standard and nonstandard interfaces is not precluded.

1.4 System standard and design objective (DO). The terms "system standard" and "design objective" (DO) are defined in FED-STD-1037. In this document, the word "shall" identifies mandatory system standards. The word "should" identifies design objectives which are desirable but not mandatory.