Hi!
Maybe this thread belongs to some other forum, but here is one
thought.
Wouldn't it be possible to produce perfect CW using the
soundcard under windows? In order to key the Tx the sound
card have to have some keying interface in order to do proper keying.
I am not sure if the sound card is good at sending DC directly to
a keying transistor. But if not, it would possible to use i.e. a 10kHz
keyed tone into a diode detector before the transistor.
Hams on VHF is doing this when working meteor scatter, but they
feed the audio directly into their SSB-transceiver.
73 de Ingo SM5AJV / 8S5A
----- Original Message -----
From: "Gilbert Baron" <gbaron@home.com>
To: "Mark Beckwith" <swca@ionet.net>; <trlog@contesting.com>
Sent: Saturday, January 06, 2001 1:40 PM
Subject: RE: [TRLog] Booting to MS-DOS with Windows ME
>
>
>
> > -----Original Message-----
> > From: owner-trlog@contesting.com [mailto:owner-trlog@contesting.com]On
> > Behalf Of Mark Beckwith
> > Sent: Friday, January 05, 2001 14:52
> > To: trlog@contesting.com
> > Subject: RE: [TRLog] Booting to MS-DOS with Windows ME
> >
> >
> >
> > >I assume you don't want the computer to send CW, as this will never be
> > >reliable within Windows or any multitasking system which steals clock
> > >cycles. The CW ends up like a piece of Gorgonzola!
> >
> > That boot diskette is sounding better and better all the time. From out
> > here in the "user" peanut gallery, isn't there some way to allow
> > the keying
> > part of the program to look at the clock cycles before they get stolen?
> >
>
>
> That is not possible if you want to allow stealing (REALLY DMA) to work. It
> is NOT the DMA that is causing the problem but rather the fact that windows
> uses time sharing to execute programs. It gives a certain amount of time to
> each task and then stops the task and starts the next one in line. You would
> have to stop that function and then you stop windows.
>
>
>
> > Mark, N5OT
> >
> >
> > --
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> >
> >
>
>
> --
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