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HF/MW/LW General Discussion General discussion on monitoring the HF (High Frequency), MW (Medium Wave), and LW (Long Wave) spectrum (0.5 - 30 MHz)

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Old 11-07-2007, 11:26 AM
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Default SITOR-B Software Decoders

What are people here actually using to decode SITOR-B?

I downloaded the NAVTEX decoder (forget the name), which I understand is the same as SITOR-B.

I also upgraded to the most recent version of MultiPSK (been using MultiPSK for a long time), and now I notice it specifically has a button for SITOR-A. But not B? Which is what most UTE transmissions use?

Note: I haven't actually tried to decode any SITOR-B yet; just want to hedge my chances with the software that will most likely do it well.
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Old 11-07-2007, 11:36 AM
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When I want to read the USCG Boston broadcasts, I usually use MixW. However, I just checked MultiPSK version 3.9, and it lists NAVTEX as one of the modes, so if you have that version you ought to be good to go.

73s Mike
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Old 11-07-2007, 11:46 AM
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I'm at MultiPSK 4.4.2 (I think that's the newest), so I'll check that out that.

To confirm: NAVTEX = SITOR-B?
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Old 11-07-2007, 12:14 PM
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Close enough - as I understand it, NAVTEX has headers on each message that contains date/time stamps and originating station information. A commercial reader can check these timestamps and see if a duplicate message is being received - if it is, it's ignored.

Reading a SITOR-B signal with NAVTEX should work just fine - I'm pretty sure the protocols are the same, with that one slight difference. 73s Mike

[edit] By the way, there's a dedicated MultiPSK Yahoo group now, and Patrick is there quite frequently.
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