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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 07-13-2014, 9:39 PM
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Default Testing your new setup

OK so you've gotten your new receiver or SDR set up, got an audio connection going, but now you need to test to see if you're getting signals to your software.

Probably the best place to hunt for digital sigs just to get you started would be the ham bands. For those that aren't aware, the ham allocations are divided into digital/CW ranges, and voice ranges. You need to concentrate on the digital ranges, and allow for propagation changes for your time zone (it would be almost worthless to check a 75m frequency in the daytime, for example).

This link gives you a nice general overview of the amateur bands

Frequency Allocations

In addition W1AW in Connecticut has regular transmissions

Digital Transmissions

If you have questions about the digital signals in the amateur service, please post them here

Amateur Radio Data Transmissions - The RadioReference.com Forums

What about non-ham stuff? Well there are only a few schedules and here is what we have so far...

The NWS SITOR broadcasts - there used to be many more of them...

USCG HF SITOR

This guide to FAX station schedules (it's PDF) is a bit dated, but should still be mostly useable

http://www.nws.noaa.gov/om/marine/rfax.pdf

And of course the regularly scheduled broadcasts every weekend from the VoA, thanks to my old friend Dr. Kim Andrew Elliott

VOA Radiogram

Now the biggest challenge you'll face is trying to identify which mode to use. You can do some of this by ear - ALE and PSK31 sound completely different. We have a collection of links to various audio samples in our HF Decoding wiki

HF Digital Decoding - The RadioReference Wiki

I'm stickying this thread so we can accumulate other regularly-scheduled digital transmissions that can be used to test a receive setup.. Any schedules outside of the ham service are solicited.

Mike
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Last edited by ka3jjz; 07-13-2014 at 9:47 PM..
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Old 07-13-2014, 11:15 PM
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Here are 2 more possibilities - a bit dated, but at least some of this should still be good

LW Navdat/Navtex Broadcasts

HF SITOR Broadcasts

Mike
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Old 07-26-2014, 9:23 PM
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Here's another possibility - the hours of operation on this station is limited, so it's a bit more of a challenge...

Maritime Radio Historical Society

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Old 07-28-2014, 7:19 AM
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Digital Radio Mondiale (DRM) is great. Digital voice on HF.

DRM Broadcast Schedule:
Broadcast Schedule | Digital Radio Mondiale

DRM Sample:
Digital Radio Mondiale (DRM) using DreamDRM, SDR#, RTL-SDR, Ham-it-Up - YouTube


You've linked it above, but here's a KSM RTTY sample:
RTTY 45/170 Weather Report - Sample 001 - YouTube


Excellent thread. Looks like you got everything I can think of covered.

Thanks Mike!

de frank in Oregon
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Old 07-28-2014, 6:09 PM
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Interesting that you brought up DRM, Frank, although you're entirely right that it's 'digital decoding'. I didn't consider that too much since there aren't that many DRM broadcasts that come to NAm.

A good catch on your part...Mike
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Old 07-28-2014, 6:18 PM
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From Hugh Stegman of the Utility Planet fame...this URL is quite long, and I hope I'm copying correctly. It's a PDF file, so the usual warnings about using Adobe or similar to read it apply here...

DWD Germany schedule

Note that this station is one of the very few sending SYNOP coding, so if your decoder handles that, this would be a good test station for it

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