Is there a "How to" article on wiring the accessory connector for AFSK RTTY

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  • Updated 1 year ago
I think the title says it all, but would be interested in a step by step on setting up the Flex for RTTY including which pins on the accessory connector to wire to the terminal unit (notice I said TU)..

As for pin numbers, my first swag would be pin 1 for AFSK coming from the TU, pin 2 (or 3) for audio out going to the TU, and then pin 14 to be grounded (probably by a switch) for PTT.

The on the SmartSDR window should I click on the "+ACC"  button or just select "Line" as the AF Input source, or do I need both.

There will be a "real" TTY on the other side of the TU, not a "glass TTY" using software emulation of a TTY.  So I believe there will be no need for DAX.  Or am I wrong? 

Steve G./N4TTY
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Steve - N4TTY

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Posted 1 year ago

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Michael Walker, Employee

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Official Response
We will likely stay with AFSK (subject to change -- or not).  

What I have learned is that since the AFSK signal stays in the digital domain going into FSK is not required.