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Shortwave Data Decoding - Discussions regarding decoding digital signals on the HF bands, including HFDL, ALE, RTTY, CW, and others.

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Old 01-16-2017, 7:26 AM
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Default NAVTEX Station Schedules

I have recently begun decoding NAVTEX on 518 kHz. Do NAVTEX transmissions always originate from only one site at a time?

For example, according to this schedule:
NAVTEX

...Honolulu transmits at 0220 UTC. Is the NAVTEX signal I hear at that time only originating from Honolulu?
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Old 01-16-2017, 8:21 AM
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I think they are indeed coordinated to a degree, altho how that happens I don't know. I do know that every station is given a certain time limit on each frequency to complete their transmissions, so that does minimize the possibility of QRM.

By the way we have a number of other sites with NAVTEX and SITOR-B (the mode which NAVTEX is based) information here...

Testing Your New Setup - The RadioReference Wiki

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Old 01-16-2017, 8:39 AM
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That's what I'm thinking too. Thanks Mike.

BTW, that's a nice page you put together...it partially inspired me to finally get going on my NAVTEX setup, which is something I've been wanting to do for a long time.
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Old 01-16-2017, 8:48 AM
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Here's a bit more info on the subject, and as I surmised, there is a 10 minute slot for each rotation...

https://en.wikipedia.org/wiki/Navtex

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