SoMe MoRe ThoTs on SteReo RTTY

While Stereo-RTTY (a late descendant of Stereo-CW) is hardly a new idea, recent months have
found me experimenting with different ways to actually achieve the most effective results using this method.  In summary, the "Stereo" audio approach involves using a pair of audio filters (I prefer Autek QF-1A's) to create a near 180-degree wide listening experience.  Overall, this audio effect in essence creates/generates a "bandpass filter" within which to "play around" inside.

Before writing this Blog, a SEARCH was done regarding Stereo RTTY posts in this Blogspot:

• [X] - (2o22): Stereo-RTTY: Is It Possible? (What can We Do with it?)
• [X] - (2o22): Stereo-RTTY: How can We Leverage It?
• [X] - (2o24): Stereo-RTTY Revisited (Yet Again)
• [X] - (2o20): BLAST from the Past: External Audio Filters I have Known
• [X] - (2o24): Demonstrating the Stereo-Radio concept - for YOUR Satisfaction
• [X] - (2o24): Using Stereo Ssb in Worldwide DX Contests
• [X] - (2o24):  BLASTS from the PAST: Stereo CW and it's many Variants.

With RTTY, because we use 2 (170-hz separated) tones, we can adjust the individual filters to "peak" those tones in each ear.  Stations who call in off-frequency will be attenuated to the degree that they are off frequency.  The selectivity control on most filters enables us to control the breadth and depth
of that attenuation.

Using the R-I-T control, off-frequency stations can be "centered" by peaking both tones in both ears. 
You should notice a noticeable improvement in the RTTY decoding as the tones are peaked in each ear.  Because RTTY tones are ALWAYS 170-hz apart, the external audio filters can be set to enhance the audio frequency pair of your choosing.

Experimenting with different decoders can also enhance the quality of the decoding process.
Some operators keep 2 or even 3 different decoders running (often on separate screens) with the
hope that at any given moment, one of the decoders will make sense out of seeming-gibberish to the other programs.

Like ANY of the "Stereo" methods I make use of in Radiosport, to get the most out of these methods, spending LoTs of listening time to learn the proper filter adjustments will find you more than ready when the next RTTY contest comes up.

Do YOU run RTTY?

If you're not using Stereo-RTTY, then you are missing out on leveraging 20th-century analog
technology in today's 21st-century radiosport world.  GO ahead - Give it a try.