It is my opinion--contrary to that of many subscribers to the writelog
reflector--that AFSK works just as well as FSK. It does have the
extra problem that you have to get the levels set correctly to the
transmitter intput.
The "tail" can be controlled using two INI file entries:
[RTTYRITE]
PTT_BEGIN_HOLD=0
PTT_END_HOLD=0
They default to 250 msec and 333 msec, respectively.
Wayne
> -----Original Message-----
> From: owner-writelog@contesting.com
> [mailto:owner-writelog@contesting.com]On Behalf Of WA9ALS - John
> Sent: Thursday, March 15, 2001 12:12
> To: writelog@contesting.com; Dave Hachadorian
> Subject: Re: [WriteLog] sound card afsk "tail"
>
>
>
>
> > Here's another thing I noticed during the rtty sprint.
> >
> > I wanted to send a quick "TU" when I was vacating the
> > frequency. The sound card would send a one-second continuous
> > tone before starting to send characters, and then it would
> > finish with another continuous tone at the end. It turned
> > my quick TU into a five star Cecil B. DeMille production!
>
> Dave, you must be running AFSK - oh yeah, now I see that in
> the subject
> line! Anyway, I knew it just from your description. I've asked about
> this "tail" many times, and have never been able to eliminate it. I
> received several suggestions related to the "PTT DELAY=" and related
> lines of the ini file etc, but none of these suggestions
> eliminated what
> you are talking about.
>
> The cleanest work-around for this is to just run FSK - That is very
> clean and shorter - If you have a buffer that only has TU%E, you will
> only hear the TU with no beginning or ending tail.
>
>
>
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>
>
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