[RTTY] AFSK to FSK converter

[Bill, W6WRT]

Good advice Rick, thanks. I'll be checking it out.

73, Bill W6WRT

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On Mon, 17 Sep 2012 09:10:11 -0400, Rick wrote:

>Bill,
>
>As I understand it you are using 2Tone from within N1MM Logger. If so, 
>there is a way to use MMTTY to transmit FSK and still use 2Tone on 
>receive. As your main decoder in the DI window, select MMTTY and 
>configure it for FSK. Open one of N1MM Logger's Additional RX windows 
>(from the bottom of the DI window's Setup menu) and configure it to 
>point to a copy of 2Tone (use a separate copy of 2Tone for each window 
>you use it in). The additional RX window is clickable just like the main 
>RX window. This should let you use 2Tone on receive and still use FSK to 
>transmit.
>
>Note that 2Tone's AFC cannot be disabled (that's probably part of why it 
>works so well). Therefore the tones it emits may not necessarily be on 
>2125/2295 Hz. Even if the difference is within the tolerance of the AFSK 
>to FSK decoder, you might still find yourself transmitting and receiving 
>on different frequencies. If you are using FSK to transmit, the Net 
>on/off with Run change option recommended by G3YYD won't work. A 
>possible workaround for this might be to always do an Align operation 
>before starting an S&P QSO. You might try embedding an {ALIGN} macro in 
>your F4 message in N1MM Logger; I haven't actually tested this, but it 
>might be worth a try.
>
>73,
>Rich VE3KI
>
>
>W6WRT wrote:
>
>> What I'm looking for is a board that will take the two audio tones of 2125 and
>> 2295 Hz from the line out of the computer and translate them into an FSK keying
>> signal.
>>
>
>and
>
>> I've been running 2Tone and RiTTY by K6STI simultaneously on two
>> separate computers with the same audio feed and I have to say I'm impressed.
>>
>> I won't say 2Tone is equal to RiTTY (few things are) but it was very close when
>> it came to picking weak ones out of the noise.
>
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