[GreenKeys] Selective Fading Experiment

[Nick England]

I think the MD-522 will run 85 and 850 shift simultaneously. IIRC John K9WT
and Ron K3TZJ have experimented with this.

The standard Navy frequency division multiplexing system AN/UCC-1 runs with
2-way or 4-way diversity.
https://www.navy-radio.com/rtty-mux-ucc1.htm


Nick England K4NYW
www.navy-radio.com


On Sun, Jan 12, 2025 at 5:22 PM W2HX <w2hx at w2hx.com> wrote:

> Has anyone ever tried combining two different shift streams into one? In
> other words, four tones in one audio stream? Would it allow one stream to
> work for two different audiences (say 170 shift audience and 850 shift
> audience)?
>
>
> 73 Eugene W2HX
> My Youtube Channel: https://www.youtube.com/@w2hx/videos
>
>
> -----Original Message-----
> From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net>
> On Behalf Of Harold Hallikainen via GreenKeys
> Sent: Saturday, January 11, 2025 10:14 PM
> To: Green Keys <greenkeys at mailman.qth.net>
> Subject: [GreenKeys] Selective Fading Experiment
>
> I ran an experiment comparing signal levels and fading with 850 and 170 Hz
> shift by transmitting four frequencies at once and seeing if they all faded
> together. My notes are at https://w6iwi.org/rtty/SelectiveFading/ .
>
> Harold
> https://w6iwi.org
>
>
>
>
> --
> Not sent from an iPhone.
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