[WriteLog] 5 bit mystery unraveled

[Ric Plummer]

Interesting idea
I believe that the military had some "regenerator" type hardware at one time
for TTY circuits
To do it with quality, it would be best to renerate the timing so it would
not introduce distrotion
But even that might not be a big deal with some of the PIC chips or other
current logic devices
So, here's a challange for someone
Ric KV1W

----- Original Message -----
From: "Bill Turner" <wrt at dslextreme.com>
To: <writelog at contesting.com>
Sent: Saturday, February 28, 2004 15:43
Subject: Re: [WriteLog] 5 bit mystery unraveled


> 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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