[GreenKeys] Experimental DSP TU

[Harold Hallikainen]

Thanks for the interest! I look forward to any comments. Also, I know
enough DSP to be dangerous, so this is a learning experience for me.

Harold
https://w6iwi.org

On Sat, July 2, 2022 5:36 pm, ad7i wrote:
> Harold --
>
> This is of great interest to me, and I thank you for posting this.  I'd
> love to learn more about how you are implementing your system, but I'm too
> swamped with other projects at the moment.  But I'm bookmarking all the
> info and hope to come back to it in September.  Thank you very much for
> documenting and sharing your work on this.
>
> Paul, ad7i
>
>
>
> On Sat, Jul 2, 2022 at 8:18 PM Harold Hallikainen via GreenKeys <
> greenkeys at mailman.qth.net> wrote:
>
>> If anyone is interested in my adventures building a DSP-based terminal
>> unit, my notes are at https://w6iwi.org/rtty/DspTU/ .
>>
>> Additional notes are at:
>>
>> https://w6iwi.org/rtty/TuComparison
>>
>> https://w6iwi.org/rtty/TuNotes
>>
>> https://w6iwi.org/rtty/TuReferences.html
>>
>> Next steps are:
>>
>> Add code to determine what percentage of the time the CPU is executing
>> the
>> code versus just looping.
>>
>> Add code to drive a display as a tuning scope.
>>
>> Add code for dynamic threshold control.
>>
>> Add mark hold on loss of signal.
>>
>> Implement loop current sampling (H11AA1)
>>
>> Finish FSK generation (keying to LPF to DDS)
>>
>> Add PTT control.
>>
>> Harold
>> https://w6iwi.org
>>
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