HAM radio amateurs use 300 Bd signal speed on short wave (HF), but on. But, outside of amateur radio, you may find other speeds and shifts being used as well as other modes that sound like RTTY, but aren't. Also needed is a modem that converts the audio tones into a digital stream of data bits. Your only option would be to use your computer to decode the signals using a RTTY decoder such as MMTTY or FLDigi.īaudot RTTY using 45.45 baud is still very popular in amateur radio and there are several RTTY contests each year (most recent one was this past Saturday). This is a limitation in the Icom firmware that you can't get around. HamComm Program for ham radio communications, supports reception and transmission of radio teletype (RTTY), AMTOR ARQ/FEC, SITOR A/B, NAVTEX and Morse code (CW) signals. The internal RTTY decoder in your radio only works when the RTTY Mark Frequency is 2125 Hz and the RTTY Shift Frequency is 170 Hz. IC-7300 SEND signal Be Careful when using it. A Dipole that Covers the Entire 80 Meter Band with SWR less than 3:1 UPDATED. The RTTY Shift Width can be changed to 200 or 425 Hz in addition to 170 Hz. Digital Modes, Ham Radio, IC-7600, Interfacing, RTTY. In the Set Menu of the radio in the Function category, you'll find the RTTY Mark Frequency (defaults to 2125 Hz) and the RTTY Shift Width (defaults to 170 Hz). You can use your computer to search for things in the PDF manuals rather than flipping pages in a paper manual. If you haven't already, I suggest you go to the Icom website and download both the Basic and the Full manuals as PDF files. But, non-amateur radio users may be using other shifts. As others have said, most amateur radio RTTY uses 170 Hz shift between the Mark and Space tones.
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