At the ship, we have at least one 16ch multiplexer that still seems to be intact enough that it might do something. I'd have to go back through my pics to see what the ID on it is, but it has 16 "cards" each with adjustable m/s freq.

Found it - this guy: https://www.navy-radio.com/rtty-mux-ucc1.htm

Jeff KC3GJX

On Sun, Jan 12, 2025 at 5:22 PM W2HX <w2hx@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@mailman.qth.net <greenkeys-bounces@mailman.qth.net> On Behalf Of Harold Hallikainen via GreenKeys
Sent: Saturday, January 11, 2025 10:14 PM
To: Green Keys <greenkeys@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




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