that's very interesting ANgazu! Other than Harris' 3GWB (WBALE) + WHARQ and 4G-ALE (WALE) + WBHF, I also found 3G-ALE + MS110 in circuit mode service (as per STANAG-4538). Different channels seem to suggest different users. And... just to be clear among the flood of acronyms: traffic waveforms: WBHF...

wow!

¡Hola y bienvenida a bordo!

Es un buen ejemplo de un análisis colaborativo entre el amigo ANgazu y yo

Hola amigos, I think that R&S use Walsh Orthogonal Modulation in the sync preambles of the GM2100 waveforms family. The Walsh Orthogonal Modulation is accomplished by taking each three bits (tribit) symbol and selecting a corresponding 4-fold repeated Walsh sequence, represented as octal charact...

Hola

It is definitely not Link-11 SLEW, but there is still some uncertainty about its belonging to the R&S GM2100 family waveforms. What's puzzling is that damn 192-symbols sequence...

Hola although the bursts have the same 192-symbols length sequence (the "acquisition preamble") of Link-11 SLEW, I think they are the R&S proprietray HF waveform running in their GM-2100/900 modem; likely something related to their development of X.25 protocol. The the evident matching...

Hola ANgazu,
bursts realmente interesantes, puedes enviarme un file wav solo para tratar de identificarlas?

ciao
Antonio

siempre es interesante, gracias!

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saludos cordiales
Antonio