[WriteLog] 5 bit mystery unraveled

Jim Rhodes k0xu at iowadsl.net
Sat Feb 28 21:11:06 EST 2004


How about the MIDI port on the sound card?


At 09:43 AM 2/28/04, Bill Turner wrote:
>On Sat, 28 Feb 2004 06:50:04 -0600, Bob Naumann - N5NJ wrote:
>
> >For the time being, if you want to control your radio, and you want to 
> run FSK, you will need 2 serial ports.
>
>_________________________________________________________
>
>I wonder if it might be possible to make an AFSK to FSK converter?  A
>simple detector which would be driven from the soundcard output,
>detecting the mark and space audio tones and converting them to a DC
>level suitable for driving the FSK input?  Perhaps a PLL type circuit?
>
>It might miss a cycle or two of the 2125 Hz audio during switching, but
>I doubt if the timing is that critical.  What do you think?
>
>--
>73, Bill W6WRT
>QSLs via LoTW
>
>
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Jim Rhodes K0XU
jim at rhodesend.net


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