The standard for specifying an RTTY frequency is to use the Mark The higherįrequency RF carrier is called “Mark” and the lower one is called “Space.” The MarkĪnd Space are often referred to as “tones” because they are two audio tones in The “shift” and is commonly 170 Hz in almost all amateur RTTY today. Two RF carriers have a fixed frequency difference between them. The two carriers are exactly symmetrical and therefore The RTTY signal itself consists of two RF carriers that are switched on and It helps to have a clear picture in one’s mind of how the mode works in order to solve the inevitable configuration issues that are frequently encountered, even by experienced RTTY operators. Just following instructions is often not successful. Getting started in the RTTY mode can be confusing and frustrating.
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