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| − | Welcome to the MultiPSK digital modes page. This article will update a much older one by F1ULT that can be found [http://f1ult.free.fr/DIGIMODES/MULTIPSK/digimodesF6CTE_en.htm here]. It includes modes that have been since added, and notes those no longer in use. This article will cover modes that can be utilized by MultiPSK found on frequencies below 30 Mhz.
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| − | Several modes are used by radio amateurs and these are in '''bold'''. However a few are also used by other services. See the notes for additional information. It is important to note that these frequencies can and do vary with the ITU region in which the user resides. Potential users of these modes should check to see which set of frequencies are appropriate for your region to be used.
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| − | To get more information on non-ham modes that has been recently reported, you should belong to the [https://groups.io/g/UDXF Utility DXers Forum] (commonly referred to as the UDXF) reflector on groups.io. This group specializes in non broadcast activity (including digital) found below 30 Mhz. The UDXF also has an extensive set of web pages that can be found [http://www.udxf.nl/ here].
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| − | *ARQ-E: {{color|red|Obsolete}}
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| − | *ARQ-E3: {{color|red|Obsolete}}
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| − | *ARQ-FAE / [https://www.sigidwiki.com/wiki/ALE-400 ALE400]
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| − | **[http://hflink.com/ale400/ ALE400 on HFLink.com]
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| − | * [https://www.sigidwiki.com/wiki/Radio_Teletype_(RTTY) Baudot RTTY (ITA2)]
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| − | **[http://www.arrl.org/digital-transmissions ARRL Digital Transmissions]
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| − | **[https://www.dwd.de/DE/fachnutzer/schifffahrt/funkausstrahlung/_node.html Deutscher Wetterdienst (German weather service)] Use Google translate
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| − | * [https://www.sigidwiki.com/wiki/Contestia Contestia]
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| − | *Coquelet: {{color|red|Obsolete}}
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| − | * [https://www.sigidwiki.com/wiki/Differential_Global_Positioning_System_(DGPS) DGPS]
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| − | ** Note: No longer active in the US
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| − | * [https://www.sigidwiki.com/wiki/DominoF DominoF]
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| − | * [https://www.sigidwiki.com/wiki/DominoEX DominoEX]
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| − | * [https://www.sigidwiki.com/wiki/WEFAX FAX (aka RadioFax, WeatherFax, WeFax)]
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| − | **[https://www.weather.gov/media/marine/rfax.pdf NOAA RadioFax schedules (PDF)]
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| − | **[http://www.udxf.nl/Fukushima-fax-sked.pdf Fukushima Fisheries Radiofax Schedule]
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| − | * [https://www.sigidwiki.com/wiki/GMDSS_Digital_Selective_Calling GMDSS / DSC]
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| − | * [https://www.sigidwiki.com/wiki/Hellschreiber Hellschreiber]
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| − | **[https://sites.google.com/site/feldhellclub/Home/frequencies Hell Frequencies]
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| − | * [https://www.sigidwiki.com/wiki/High_Frequency_Data_Link_(HFDL) HFDL]
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| − | ** [https://dxinfocentre.com/hfdl.htm Worldwide HFDL HF Aeronatuical Stations]
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| − | * [https://www.sigidwiki.com/wiki/PACKET HF Packet]
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| − | **[https://wiki.complete.org/PacketRadioOnHF#:~:text=The%20RF%20protocol%20used%20by,you'll%20be%20using%20SSB. Packet Radio on HF]
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| − | * [https://www.sigidwiki.com/wiki/JT65 JT65 (A, B, C)]
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| − | **[http://hflink.com/jt65/ HFLink JT65A page]
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| − | * [https://www.sigidwiki.com/wiki/Lentus Lentus]
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| − | * [https://www.sigidwiki.com/wiki/Multi_Frequency_Shift_Keying_(MFSK) MFSK 8/16/32/64]
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| − | **[http://www.arrl.org/digital-transmissions ARRL Digital Transmissions]
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| − | **[https://swradiogram.net/ Shortwave Radiogram]
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| − | ***Note: Other modes are often included in these broadcasts. See the website for information
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| − | * [https://www.sigidwiki.com/wiki/MIL-STD-188-110_Appendix_A_16-Tone MIL-STD-188-110A]
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| − | ** Rarely reported
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| − | ** Note that this mode has been used during Armed Forces Day in the US over the last couple of years
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| − | * [https://www.sigidwiki.com/wiki/Automatic_Link_Establishment_(2G_ALE) MIL-STD-188-141A/B (aka ALE or ALE2G)]
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| − | **This mode is used both by hams and numerous military and non governmental organizations around the world. There are hundreds - sometimes more than a thousand - reports in the UDXF every month
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| − | **[http://www.hflink.com/ HFLink]
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| − | **[https://wiki.radioreference.com/index.php/ALE_Networks ALE Networks]
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| − | * [https://www.sigidwiki.com/wiki/MT63 MT63]
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| − | * [https://www.sigidwiki.com/wiki/Olivia Olivia]
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| − | **[http://hflink.com/olivia/ HFLink Olivia page]
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| − | * [https://www.sigidwiki.com/wiki/PAX PAX / PAX2]
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| − | * [https://www.sigidwiki.com/wiki/PACTOR_I PACTOR-1]
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| − | **Rarely reported
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| − | **This mode is also used in the maritime industry
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| − | * [https://www.sigidwiki.com/wiki/Phase_Shift_Keying_(PSK) PSK 31 (various speeds, BPSK or QPSK)]
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| − | **[http://www.arrl.org/digital-transmissions ARRL Digital Transmissions]
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| − | * [https://www.sigidwiki.com/wiki/RTTYM RTTYM]
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| − | * [https://www.sigidwiki.com/wiki/SITOR-A SITOR-A] (aka AMTOR Mode A or AMTOR-ARQ)
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| − | **There are only a small handful of HF maritime stations that use this mode. Most have gone over to PACTOR, using heavy compression and encryption techniques.
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| − | **This mode is also used by the Ministry of Foreign Affairs (MFA) Egypt using the ATU80 alphabet which makes reading this traffic difficult. See this [http://www.udxf.nl/Decoding-MFA-Egypt.pdf PDF] from the UDXF website for a further discussion on this topic
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| − | * [https://www.sigidwiki.com/wiki/SITOR-B SITOR-B] (includes NAVTEX; aka AMTOR Mode B)
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| − | **Note that MFA Egypt has also been known to use this mode
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| − | **[https://www.dxinfocentre.com/maritimesafetyinfo.htm HF Worldwide RadioTelex Broadcasts]
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| − | **[https://dxinfocentre.com/navtex.htm NAVTEX Broadcasts]
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| − | **[https://www.weather.gov/marine/uscg_broadcasts Marine Weather Broadcasts from the US Coast Guard]
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| − | * [https://www.sigidwiki.com/wiki/Slow-Scan_Television_(SSTV) SSTV]
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| − | ** [https://www.amateur-radio-wiki.net/sstv-frequencies Amateur Radio Wiki - SSTV Frequencies Everything You Need to Know]
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| − | ** HF pirates often use this mode as well as hams
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| − | * [https://www.sigidwiki.com/wiki/STANAG_4285 STANAG 4285] (listed just as '4285')
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| − | **This mode is usually heavily encrypted which no program can decode; however it can be read when the station sends a test tape in the clear.
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| − | **A listing of STANAG stations from 2020 can be found in the 'Files' section, 'Ute Info' folder of the UDXF reflector. Both text and spreadsheet formats are available
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| − | ** [http://www.udxf.nl/Some-Notes-on-STANAG4285.pdf Some Notes on STANAG4285 - A DXers View (PDF)]
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| − | * [https://www.sigidwiki.com/wiki/THOR Thor]
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| − | * [https://www.sigidwiki.com/wiki/THROB Throb / ThrobX]
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| − | * [https://www.sigidwiki.com/wiki/VOICE Voice]
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