Thus, fldigi can, theoretically) be used as "transport" by applications (that can transmit to, and read from, TCP/IP sockets) that are not included of the fldigi suite. The applications in the fldigi suite use TCP/IP socket 7322 to communicate between the applications.One example is that in the "fsq" mode of fldigi, you can specify a station to use as a relay for your transmissions. There is no real "networking" in fldigi, though there are some "helper" capabilities. There is no implementation of the AX.25 protocol in fldigi. fldigi has some accommodations for the wider channels of using frequency modulation (FM) (and thus, theoretically higher data rates) on the 50 MHz and higher bands. fldigi is designed primarily for operation on the narrow channels of the Amateur Radio high frequency (HF) bands 30 MHz and lower, and HF modes (single sideband - SSB).fldigi is the primary application, and the other applications in the fldigi suite are "helper" applications such as flamp (discussed here) and flrig which controls radio settings (on radios that have that capability).Thus it is "universal" "Mac fldigi" can communicate just fine with "Raspberry Pi fldigi". Thus there are interoperable implementations for Windows, Mac, and Linux (and BSD, etc.). fldigi was written in portable code, and is open source.You don't need any additional "sound card drivers", "protocol engines", etc. The fldigi suite is a self-contained suite of sound card modes and applications that are coupled / integrated with those modes.So to save readers at least some of my grief at figuring out the fldigi suite, here's my capsule explanation. The software is mostly used by amateur radio operators who connect the microphone and headphone connections of an amateur radio SSB or FM transceiver to the computer's headphone and microphone connections, respectively. Wikipedia's article on fldigi has a reasonable intro paragraph:įldigi (short for Fast light digital) is a free and open-source program which allows an ordinary computer's sound card to be used as a simple two-way data modem. (Yes, that's the author's preferred capitalization - all lower case). In my initial encounters, I had a hard time "grokking" what exactly the fldigi suite is, and what it does , and how it works. To reconstitute RadioMirror in 2021 would require cobbling together some old Windows code for the server and client, terminal node controllers (TNCs) or using DireWolf's "KISS" interface, Windows computers, etc.Īs I explained my enthusiasm for the RadioMirror concept, my friend, colleague, and co-conspirator on many of my Amateur Radio data communications experiments Bill Vodall W7NWP* verbally "smacked me upside the head" (probably a very dated cultural reference) by reminding me that there is a "RadioMirror" mode in the fldigi suite, specifically flamp (PDF). Again, as far as I'm aware, RadioMirror never quite got going, other than some experiments to prove out the concept. Then configure fldigi, mt63, and flmsg.My two articles on RadioMirror - Revisiting RadioMirror and More Thoughts on RadioMirror, constitute a reasonably deep dive on the use case, concepts, and details of RadioMirror. The easiest way to follow this is to download and install both fldigi and flmsg. Clicking a link will bring you to the appropriate page. Select the appropriate operating system below that you will be using. Wayne County ARES uses fldigi frequently, because of this it is a good skill to have. Because there are several different operating systems, this will be a multi-part tutorial. For simplicity, we will be using the acoustic coupling method, which can be accomplished with any transceiver and requires no direct connections from the transceiver to the computer. There are many different ways to interface your transceiver with the computer, so it controls the radio directly, including using cat control, signalink, or rigblaster. Fldigi is computer software used by amateur radio operators to transmit and receive digital messages in conjunction with a transceiver using the computers soundcard.
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