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RTTY frequencies - Nonstop Systems
https://www.nonstopsystems.com/radio/frank_radio_rtty.htm
RTTY frequencies (bandplans change! Always check the latest IARU bandplan for your region!) Frequencies: 3580-3620 kHz (3520-3525 in Japan) 3590 kHz - RTTY DX; 7040 kHz - RTTY DX; 7080-7100 kHz - in the USA; 10130-10140 kHz; 14070-14099 kHz (avoid transmitting on beacon freq 14100 kHz) 18100-18105 kHz; 21070-21100 kHz; 24920-24925 kHz; 28070-28150 kHz; …
Ham Radio RTTY Frequencies & Channels » Electronics …
https://www.electronics-notes.com/articles/ham_radio/digimodes/amateur-rtty-frequencies.php
Radio Teletype (RTTY) - Signal Identification Wiki
https://www.sigidwiki.com/wiki/Radio_Teletype_(RTTY)
A RTTY Tutorial for beginners - IW5EDI Simone - Ham-Radio
http://www.iw5edi.com/ham-radio/26/a-rtty-tutorial-for-beginners
RTTY allocations for 40 meters vary greatly all over the world. In the US, RTTY is permitted between 7000 and 7150, although most US activity is between 7080 and 7100. DX activity is often found between 7020 and 7045. The ARRL promotes 7040 as the RTTY DX calling frequency, but the CW QRP’ers use it as their calling frequency too. Be a gentleman!
What is RTTY: Ham Radio Radio Teletype » Electronics …
https://www.electronics-notes.com/articles/ham_radio/digimodes/what-is-rtty-radio-teletype.php
Typically the 170 Hz difference is generated using audio frequencies of 1445 Hz to represent a mark condition and 1275 Hz to give a space. One of the advantages of RTTY having a low data rate is that it means the bandwidth required for the transmission is relatively low.
Getting Started On RTTY - AA5AU
https://aa5au.com/GettingStartedOnRtty.pdf
The standard mark and space tones are 2125 hz and 2295 hz respectively. These frequency tones are also referred to as “high” tones. Although these standard tones are used by most Amateurs, it's possible to operate RTTY using other frequency tones. This is fine as long as you maintain the standard 170 hz shift (2295-2125 = 170 hz).
KLOTH.NET - RTTY signals
http://www.kloth.net/radio/rtty.php
Common RTTY shifts are 170, 425 and 850 Hz. 170 Hz being widely used by radio amateurs, 850 or 170 preferred by AFTN, 425 often used by GENTEX telex services and press agencies, while this is just based on common practice and there are no fixed standards that certain user groups or services have to strictly adhere to.
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