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STANAG 4681

STANAG 4681 UHF SATCOM integrated waveform (IW) interoperability

Makers and integrators of UHF SATCOM terminals, and the defence programmes that specify tactical satellite communications equipment.

STANAG 4681 is the NATO agreement on the integrated waveform (IW) for interoperable UHF SATCOM terminals. NATO has not released it publicly; this page describes it from AEP-4845, a public NATO publication that cites it.

Edition
2
Published
2022-07-25

NATO has not released this STANAG publicly. It is NATO UNCLASSIFIED, and organisations that need it obtain it through their national standardization authority.

What it is

STANAG 4681 is the NATO agreement on interoperability between ultra high frequency satellite communications (UHF SATCOM) terminals, integrated waveform (IW). It covers the publication AComP-4681 edition A. Edition 2 was promulgated in July 2022 under DPC, DPC, CaP1, SATCOM CaT. NATO has not released STANAG 4681 publicly, so this page describes it from AEP-4845, a public NATO publication that cites it.

AEP-4845 discusses the integrated waveform in Volume VI, under the heading SATCOM IW. It states that "IW standards are defined from the following MIL-STD-188-181C/182B/183B series." Of the STANAG itself it says: "The IW waveform is in the process to be ratified as a STANAG specification (STANAG 4681)." As a reference performance figure, it gives that "a single satellite channel could be configured to provide up to twenty voice communication or three 16kbps data logical channels."

Of UHF SATCOM in general, AEP-4845 says: "UHF SATCOM communications enable users to conduct secure communications under all weather conditions and cover, with usage of portable terminals suitable for DSS (with portable umbrella antenna)." It then notes a limitation of the terminals in use: "Current DAMA and IW terminal solutions implies that specific US HW components must be used, unless currently restricted information was provided." As the alternative, it points to STANAG 4681: "A more open and interoperable TACSAT-IW based (STANAG 4681) solution should be instead available and fully SW implementable, without any restriction."

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A supplier bound by STANAG 4681 through a contract holds the obtained text through its national authority. In ComplyTrain you record the requirements that apply to you as your own requirements, give each an owner, and keep the evidence that shows you meet them against each one.

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