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| − | <div style="margin: 0; margin-right:10px; border: 2px solid #B6B6B6; padding: 0 1em 1em 1em; background-color:#ffff00; align:right;">
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| − | Welcome to the Decoding the Shortwave Radiogram Broadcasts page. This page will help both newcomers as well as more experienced people with topics regarding decoding the digital broadcasts as advertised on the [https://swradiogram.net/ Shortwave Radiogram] page. It's built in a Q&A style to make finding topics relevant to the user easier to find </div>
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| − | ==What Kind of Radio Do I Need?==
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| − | Just about any radio that covers the 2-30 Mhz range is capable of receiving these stations. It should be reasonably stable, selective and sensitive. This encompasses a wide range of radios, everything from portables, such as those from Tecsun and Degen, all the way to Software Defined Radios (SDR) such as the SDRPlay and Perseus. Even wide band radios like those from Icom and AOR can be used. It doesn't need to be expensive. To begin your research, see our [[HF Equipment and Accessories]] and [[Software Defined Radios]] articles.
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| − | ===I Dont Have A Radio Yet. Can I Use a Web Radio?===
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| − | Yes you can. If you don't have the Stereo Mix app on your PC, you will need to install software like [http://stereomixplus.com/ Stereo Mix Plus] to route the audio from your speakers to the soundcard. You can find some online networks in our [[Live Tunable Receivers]] article.
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| − | ==What About Antennas?==
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| − | It's been often said that the better the antenna, the better your results. Unfortunately sometimes that is difficult to obtain; you may be in a situation where outdoor antennas are not allowed, or you have very little space with which to work. What radio you are using, your budget and circumstances will play a large role in what you can use. Read our [[Basic HF Antennas]] article for a discussion on this topic.
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| − | ==How Can I Get a Better Signal?==
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| − | If you have done as much as you can with your radio and antenna, but are still not satisfied with your results, there may be some more than you can do to improve your chances. See our [[Improving HF Reception]] for a discussion on this topic.
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| − | ==How Does the Signal Get to Me, Anyway?==
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| − | We are very much at the mercy of the Sun when it comes to how signals get propagated across the globe. Unfortunately, as of this writing, we are in a very low period of solar activity, so we must depend on better radios and antennas to help. However, an understanding of how a signal propagates through the ionosphere is very important; this will help you to understand why a signal can be heard at some times but not others. See the [http://www.ae4rv.com/tn/propflash.htm AE4RV Propoagation Primer] for a basic discussion on this topic. Be sure to turn your flash player on before looking at this site.
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| − | ==How Do I Connect My Radio (SDR) to the PC?==
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| − | This is a topic that is difficult to define simply, as there are so many possible ways to connect the two together. The method used for connecting a portable radio or desktop is very different how you would connect a Software Defined Radio (SDR). See the [[Connecting Radios to Soundcards]] article for an extensive discussion on this topic.
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| − | ==What Modes Are Being Used?==
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| − | <div>
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| − | There are literally hundreds of different modems being used on the HF spectrum. Here, we are concerned with modes that are used in the amateur radio (ham) community, as software for these modes is readily available.
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| − | </div>
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| − | ; From the Signal Identification Wiki
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| − | * What is [https://www.sigidwiki.com/wiki/Multi_Frequency_Shift_Keying_(MFSK) MFSK?]
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| − | * What is [https://www.sigidwiki.com/wiki/Olivia Olivia?]
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| − | * What is [https://www.sigidwiki.com/wiki/THOR Thor?]
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| − | ; Other Sources
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| − | * [http://www.w1hkj.com/modes/index.htm Digital Modes Sights and sounds (fldigi wiki)]
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| − | * For an explanation of Slow Scan TV (SSTV) and compatible software, see section 5 of the [[HF Software Decoders]] article
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| − | ===Where Can I Find Compatible Software to Copy These Broadcasts?===
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| − | <div>
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| − | While FLDigi is the most popular software used for this, it's not the only one that's capable of decoding these broadcasts. All of these applications recognize the use of the RSID to aid in recognizing the mode that is being sent. Questions or issues with the software should be directed to the indicated mailing lists, where specific help is available.
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| − | </div>
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| − | * [http://www.w1hkj.com/RSID_description.html What is the RSID?]
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| − | *[http://www.w1hkj.com/ W1HKJ home page - home for FLDigi]
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| − | *[https://sourceforge.net/projects/fldigi/files/ FLDigi Downloads] Sourceforge site
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| − | **Need to install flmsg and flamp as well
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| − | ** [http://www.w1hkj.com/doku/doku.php?id=start Fldigi Wiki]
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| − | ** [https://groups.io/g/winfldigi Fldigi mailing list]
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| − | ** [https://www.facebook.com/groups/189289757767519/ FLDigi Facebook group]
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| − | * [https://www.hamradiodeluxe.com/ Ham Radio Deluxe] (includes DM780)
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| − | ** [https://wiki.hamradiodeluxe.com/index.php?title=Main_Page Ham Radio Deluxe wiki]
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| − | ** [http://forums.hrdsoftwarellc.com/ Ham Radio Deluxe support forums]
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| − | ** [https://www.facebook.com/HamRadioDeluxe/ Ham Radio Deluxe Facebook group]
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| − | *[http://f6cte.free.fr/index_anglais.htm MultiPSK]
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| − | **[https://groups.io/g/multipsk MultiPSK mailing list]
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| − | ** [https://www.facebook.com/k3ukandy/ MultiPSK Facebook group]
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| − | *[https://sourceforge.net/projects/fldigi/files/AndFlmsg/TIVAR/ TIVAR]
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| − | ** Android fork of FLDigi
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| − | ===Are There Any Examples of These Applications In Actual Use?===
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| − | <div>
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| − | These are YouTube videos with examples of each application above being used to decode an actual broadcast. There are many other examples on YouTube and a well formatted search will bring them up
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| − | </div>
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| − | ; Using DM780 (Ham Radio Deluxe)
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| − | * [https://www.youtube.com/watch?v=qUHWsIfbYAE VoA Radiogram 7th july 2013]
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| − | * [https://www.youtube.com/watch?v=cYnaA2rkrVI 15670 kHz USB - VOA Radiogram - MFSK Transmission - 9-15-2013 19:51 UTC]
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| − | * [https://www.youtube.com/watch?v=S4S2dbDUyHY Voice of America Radiogram - Sept.22, 2013 19:55 UTC]
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| − | * [https://www.youtube.com/watch?v=lBIacwD9nNM Setting the RSID in DM780 Ham Radio Deluxe]
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| − | ; Using FLDigi
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| − | * [https://www.youtube.com/watch?v=BrGqFxtrX6U Receiving image in the Shortwave Radiogram 9400 kHz with Fldigi]
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| − | * [https://www.youtube.com/watch?v=1VvJcYplTf0 Shortwave Radiogram #84 Jan 25 2019 on 7780Khz Shortwave Radio R8600]
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| − | * [https://www.youtube.com/watch?v=xSzgH02oOw4 Decoding Shortwave Radio Gram using GQRX and FLDigi]
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| − | * [https://www.youtube.com/watch?v=60ixrfAItUw Shortwave Radiogram Program 98- Fldigi settings]
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| − | ; Using MultiPSK
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| − | * [https://www.youtube.com/watch?v=KD2Q1UJLhOU Decoding Shortwave Radiogram 26 in MFSK32 Dec 16 2017 on 9400 kHz with Multipsk]
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| − | * [https://www.youtube.com/watch?v=J-hou0nChQk Shortwave Radiogram #36. Received & recorded in Germany on 9400 kHz. Decoding with Multipsk]
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| − | * [https://www.youtube.com/watch?v=14sTaOrPkHQ SW Radiogram #33 on 9400 kHz shortwave received with AFEDRI SDR, MFSK32 decoding with Multipsk]
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| − | ; Using TIVAR (FLDigi fork)
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| − | * [https://www.youtube.com/watch?v=UCgKwAJoaEY Decoding (MFSK32, MFSK64) with #Tivar of #Shortwave Radiogram 57]
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| − | * [https://www.youtube.com/watch?v=COhUi603NVo Shortwave Radiogram Decoding text and image]
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| − | * [https://www.youtube.com/watch?v=xTOKWdkzoV8 Shortwave Radiogram]
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| − | ===My Images Decoding with SSTV or MFSK Are Slanted===
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| − | *If you are copying images on SSTV or MFSK and they appear slanted, you will need to apply a correction. Several digital decoding programs have this capability, and they are described in the links below;
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| − | ** [http://www.w1hkj.com/FldigiHelp/digiscope_display_wwv_mode.html Correcting Sound Card Slant using FLDigi]
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| − | ** [http://www.ke5rs.com/worldsstv/worldsstv-slant.html SSTV Slant Adjustment Help]
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| − | ** [http://www.kk1x.net/mixw.html MixW Sound Card Calibration]
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| − | ----
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| − | * Return to [[DXing Digital Utilities]]
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| − | * Return to [[Testing Your New Setup]]
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