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Showing posts with label STANAG-4538. Show all posts
Showing posts with label STANAG-4538. Show all posts
30 November 2025

STANAG-4538 LDL packets retransmissions, an interesting case

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A few days ago I was casually watching the 4 MHz band when an unusually long STANAG-4538 (3G-HF) transmission on 4561.0 KHz/USB caught my at...
4 December 2024

256-bit IVs & 0xD1E221E1 sequence

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Just a quick note to observe that bitstreams using (alleged) 256-bit Initialization Vectors (IV) encryption have the same 32-bit/4-byte sequ...
26 August 2024

about the unid 32-bit protocol used in S-4538 + MS-110A transfers

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This is the third time I have encountered these transmissions [1] and, given the good number of recordings made over a few days on the frequ...
18 March 2024

3G-HF Fast Traffic Manager (FTM) at work

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This sample provides an example of the use of 3G-HF (STANAG-4538) Fast Traffic Manager (FTM) protocol, which is sometimes referred to as sim...
18 April 2023

LDL 139-byte packets

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For a few days I have been following the 3G traffic that takes place on 6682.0 KHz/USB and I have noticed that many of the transfers are exa...
24 October 2022

Harris' 3G-ALE FLSU Async call (2)

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Commenting the recent post about the Harris's implementation of the FLSU Async call [1], an anonymous reader sent me a good quality reco...
1 comment:
10 October 2022

Harris' 3G-ALE FLSU Async call: a 141B/STANAG-4538 optimised implementation?

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I recently had the chance to study some good quality recordings of (certified) Harris 3G-ALE Asynchronous calls and surprisingly I found so...
1 comment: