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Radio Teletype (RTTY) - Signal Identification Wiki
https://www.sigidwiki.com/wiki/Radio_Teletype_(RTTY)
Audio Sample. RTTY (Also known as Baudot or ITA2) uses the Baudot 5-bit alphabet with FSK to send text messages over the shortwave. This mode is gradually dying out in favor of more robust modes like PSK31 in the amateur service. Uses the ITA-2 alphabet (Commonly known as Baudot, derived from the Murray code).
Getting Started On RTTY - AA5AU
https://aa5au.com/GettingStartedOnRtty.pdf
There is an excellent explanation of AFSK and FSK in the MMTTY help file so I won't go into a lot of technical detail here. For simplicity sakes, AFSK and FSK are terms to describe how RTTY is transmitted. AFSK is when you send audio from a TNC or Sound Card to the audio input of your transmitter either via the mic input or accessory jack.
RTTY and SSTV sounds - Resource Detail - The DXZone.com
https://www.dxzone.com/dx11182/rtty-and-sstv-sounds.html
About RTTY and SSTV sounds The resource is currently listed in dxzone.com in a single category. The main category is Ham radio sounds archives that is about Ham radio sound samples & DX audio clips. This link is listed in our web site directory since Friday Sep 16 2005, and till today "RTTY and SSTV sounds" has been followed for a total of 5672 times.
RTTY software, Digital mode ham radio - AMTOR, PSK31, AX25 ...
https://www.dxsoft.com/en/products/truetty/
TrueTTY can decode signals from a WAVE-file. Desired file is selected by the "File / Decode From File" command. A WAVE-file must be Windows PCM file, without compression. A sample rate must be 11025, 22050 or 44100 Hz. Preferred file parameters are mono, 16 bit, 11025 Hz. Selected options of the program are saved by "Setup / Save" button.
A RTTY Tutorial for beginners - IW5EDI Simone - Ham-Radio
http://www.iw5edi.com/ham-radio/26/a-rtty-tutorial-for-beginners
For example, if you say you are transmitting RTTY on 14080.00 kHz, which means your MARK frequency is 14080.00 kHz and your SPACE frequency is 170 Hz lower, or 14079.83 kHz. While 170 Hz is the standard shift, sometimes you will find stations using a shift of 200 Hz, but don’t worry about it. Your equipment will copy it fine in almost all cases.
Audio and sounds files - Astrosurf
http://www.astrosurf.com/luxorion/qsl-audiofiles.htm
RTTY 50 bauds transmission: 171 KB: RTTY 50 bauds transmission: 314 KB: RTTY ITA2 mode at 50 bauds, extract of a weather report: …
GitHub - imaoca/RTTY: Demodulation Radio Teletype …
https://github.com/imaoca/RTTY
Some parameters in the source code need to be modified according to the audio file to be input. fname='rtty3s.wav' # should be specify the filename. smp= 8000 # Sampling Rate FQm= smp/914.0 # Mark Frequency 914Hz FQs= smp/1086.0 # Space Frequency 1086Hz. fname. should be specify the filename.
Sounds & spectra - Nonstop Systems
https://www.nonstopsystems.com/radio/radio-sounds.html
RTTY or "Radio Teletype" is a FSK mode that has been in use longer than any other digital mode (except for Morse code). RTTY is a very simple technique which uses a five-bit code to represent all the letters of the alphabet, the numbers, some punctuation and some control characters.
Internet Teletype - RTTY
https://rtty.com/itty/index.htm
The RTTYMailer software can be downloaded from: Download RTTYMailer You will need to unzip the file and place the executable somewhere on your computer where you can easily find it! There is only one file in the package. Press the "Get Files" button and you are allowed to select one to many files for entering into the queue.
A Radioteletype Over-Sampling Software Decoder for ... - TAPR
https://files.tapr.org/meetings/DCC_2014/DCC2014-Radioteletype-Over-Sampling-Decoder-K0JJR.pdf
Marks and Spaces are represented in an RTTY signal by audio tones of 2,125 Hz and 2,295 Hz, respectively. The 170 Hz separation between the Mark and Space audio tones is the standard used by amateur radio. Lower side band (LSB) is the preferred mode for RTTY communications. Note that in LSB mode, a Mark tone has higher a RF frequency than a ...
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