You might need to «undertune» a bit - I had to set 13.881 MHz. For starters, tune to 13.883 MHz - it's a station in Hamburg that transmits 24/7 with a very high power. Pay attention to the RPM/IOC column - it shows the mode of transmission, and sometimes it's not standard 120/576 (Kyodo, for example, often uses 60 LPM because kanji are more sensitive to distortion). And up-to-date list of stations can be found here (pdf). At this point you're set - decrease the reciever's volume to its minimal value (just in case), switch it to the SSB mode (USB, if your receiver supports both sidebands) and connect it to the line-in. ![]() Now choose Op Mode>WEFAX>WEFAX-IOC576 or WEFAX-IOC288, depending on what you're trying to receive (almost every station will use IOC576). Then it will ask for input device - choose whatever device you've jammed your audio cable into.Īfter this little initial config, you'll see the main window in its full glory. When you launch it for the first time, it will ask for your callsign and location - it all can be skipped (unless you plan to transmit, in which case you probably know everything I wrote here). So, how do I shot web receive a fax?įirst, you need to install Fldigi. I recommend sticking to Fldigi because it's free and it can decode nearly anything. There is a good bunch of WEFAX decoders around: SeaTTY, MultiPSK, Fldigi and some others. If it has a soundcard (no matter how fancy), it's good. If you're feeling adventurous, you can make something like this to improve your reception. Stock antennas tend to suck big time, especially if you're in the middle of a city. The most important part here, because good antenna = good signal = clear faxes. And yes, RTLSDR will work just fine if you pipe the sound output to the decoder with something like Virtual Audio Cable. ![]() I'm using Degen DE1103, but anything capable of SSB receiption will work. a PC (any toaster will do the job as long as it has the line-in/mic port).And we can decode all this stuff, too - given a receiver, an audio cable and some software. But did you know that a similar technology is used to provide ship crews with weather data when there's no Internet connection? And Kyodo, a Japanese news agency (they sure like faxes, huh), still broadcasts news like that. When most people hear «fax», they remember those clumsy hybrids of a telephone and a printer straight outta 80s (unless you're in Japan, of course - they're still common there). One of the many botched faxes This is a (rather freely) translated version of this article.
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