But lately I upgraded my Mac OS to Big Sur and ran into problems. I've used FLDIGI for many years, and it's always worked great. It is, hands down, the BEST decoding engine I have used.and I have used them all(if set to the highest level in menu.better have a fast puter tho.lol) Keep in mind, this is FREE software that is cross-platform.the world is not perfect. Like some, I have also had "issues"(crashes). I have been running FLDigi for many, many years andĪFSK vs FSK(RTTY).With the soundcard/interfaceĪdjusted right, you CAN NOT tell the diff. And I for one am GLAD it does not support FT8,etc!!!Īnd hope it never does. It does RTTY just as well or better than my KAM or old UTU. And Dave and the groups support is first class. It is by far the BEST digi-mode software out there(Free or paid)ĭave has really put in the work and kept it up to date. Not tied into any one thing with this software.īeen running FLDigi A LONG TIME! Almost since it began. Very Nice to pick the mode to operate under pending propagation etc. I always look forward to new releases to see what the development team have included as new things arrive in the digital world. Easy to build custom forms for own group or for specific needs. Great support software for emergency operations and communications for agencies we may serve. I have asked for information to be included and got a prompt reply of how to add the information and then on the next update, it was all included. Wish more people would get on board with it. ![]() Have used it for relay through another station a couple of times and it performs well. For Peer to Peer communications, It is great. Provides flexibility to do many things and many modes of operation. Have run comparison speed tests with other popular software programs and find this to be best all round to use. The development team have done a great job of expanding and adding features including new modes to operate on. I like the add on features of Flmsg for forms and Flamp for ensuring 100% information transmittal. I have configured mainly for Windows operation but have helped others configure for Mac. The full “un-cut” two minute versions are mp3 and wav.I have been running this for many years and find it fantasitc to run. (The telemetry audio recording above was made by Daniel Richman during one of Robert Harrison's Icarus launches on Saturday 26th September 2009. This means that the balloon usually needs to be above your horizon. Unless you are very close, you won't hear anything unless you have line of sight. Settings to decode this should be 425Hz shift, 50 Baud, 8 bit ASCII, no parity and 2 stop bits. Please practice decoding in OFFLINE mode to eliminate any confusion with old data from this clip keep appearing on the map! You can do this by unchecking “online” on the “DL Client” dropdown. ![]() ![]() There is a 30-sec recording of live data mp3 version and wav version. The two tones appear in the above 'waterfall' window of fldigi (see below) as two yellow bands (other signals are interference and noise) and are what the decoder lines should be centred over. The tones are then used by fldigi to decode the RTTY signal - which is basically just RS232 - old fashioned serial - at 50 bits a second. 1000Hz and 1200Hz are easily in the audible range (the receiver will only output from around 300-3000Hz) - and are passed to the soundcard.
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