HF Calling Systems (Selcal Decoder)

Updated: Feb 6

If you don't know who called whom, it is difficult to determine the significance of a network's nodes, and impossible to target them properly.


The modern HF environment is a challenge for COMINT - SIGINT systems. There are many dozens of active calling systems (ALE, ALM, ALIS, ACS, Selcall (or Selcal) requiring a decoder). All of our competitors provide you with solutions to an average of just three of them, and for no variants thereof. With well over 90 calling systems on air in 2021, you're left in the dark if you aren't using Krypto500. We add more continuously.


We build solutions for the real-world, the actual variants and systems in use by targets of intelligence interest, and so we offer dozens of decoders for these important calling systems (selcal decoder).




If you're ready to improve your targeting and enhance your signals intelligence (SIGINT) and COMINT (communications intelligence) production, contact us - just click the logo below:





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