Hi Ed,
I want to thank you guys for responding.
I also get all the pops and crackles and the panadapter display flashing
on and off drives me crazy, but yes I believe I could hear the 200 hz
offset solid S9 tone. Useful band noise? I doubt I would have heard a
dit or a dah!
What would be really cool is for several of you guys to establish the
highest code rate at which you could hear useful band noise... let's
define it as a dah. Using a dah will tilt the table a little bit in
flex's favor, but that's okay..
If we get 10 or 12 folk to do it we might see a trend with twenty or
thirty reports we would have a dang good idea what the full QSK upper
limit is. That would probably be really good info for our wonderful
designers. If we get enough results subjective listening ("I hear
enough band noise would be okay...") but don't guess...
Remember, to go with, we need Cpu speed + memory size, Windows version,
no other apps running and preferably v1.10.4 + 5K or 1K.
I just re-ran the test listing for subjective band noise. I hit 17wpm.
Very best regards
Rob
AB7CF
On Fri, 25 Apr 2008 19:54:04 -0400 "Ed Russell" <[EMAIL PROTECTED]> writes:
> I can't reproduce this result. On a 3ghz quad core, with 192khz
> sample rate and cpu at 8%, sending 25wpm, I hear no usable band
> sound
> between dots. Only pops and crackles.
>
> 73 Ed W2RF
>
> On 25 Apr 2008 at 15:15, Robert Dennison wrote:
>
> > Hey Jerry,
> >
> > You've probably noticed my post just pervious to yours. With a
> 3Ghz
> > Pentium 3D and nothing but v1.10.4 running, I had QSK to 25 Wpm.
> A
> > Pentium 3D is a bit of a dog so I bet a top end box gets 40WPM...
> >
> > How about giving us your QSK performance limit? Your machine
> and
> > Windows info. No apps running but PowerSDR v1.10.4 basic
> release.
> >
> > Over time I've established to my satisfaction my SDR1K doesn't
> issue any
> > discernable output power with a Drive of 0. So, I just found a
> solid
> > tone in a CW subband off set my transmit frequency 200Hz so I
> could
> > recognize the tone, enabled break in set the delay to 10msec and
> had
> > at...
> >
> > DON'T do this procedure unless you know for sure your SDR doesn't
> > generate any power with "0" DRIVE!
> >
> > If we get a dozen or so results, we can probably pin this down to
> truth!
> >
> > very best regards
> > Rob
> > AB7CF
> >
> >
> > On Fri, 25 Apr 2008 17:04:13 -0400 Jerry Flanders
> > <[EMAIL PROTECTED]> writes:
> > > At 03:35 PM 4/25/2008, Jim Lux wrote:
> > > >Quoting Jerry Flanders <[EMAIL PROTECTED]>, on Fri 25 Apr
>
> > > 2008
> > > >11:30:57 AM PDT:
> > > >
> > > >
> > > >>I am beginning to wonder if CW in the production software is
> > > broken
> > > >>and only we in the field notice it. Or perhaps the production
>
> > > version
> > > >>does not presently include features of the version used by Bob
>
> > > above?
> > > >
> > > >
> > > >here's a simple test which someone with a F5K could run
> > > >
> > > >If you have a marker generator or calibrator, turn it on with
> > > <snip>
> > >
> > > Hi Jim
> > >
> > > Actually, it is pretty easy to test by ear, and you don't need
> any
> > > special equipment - QSK is the ability to actually hear activity
> on
> > >
> > > the band between dits at a reasonable speed. Simply set the CW
> speed
> > >
> > > to, for example, 35 WPM, key a string of dits and listen for
> band
> > > activity between the dits. This is the true test of a QSk radio
> - no
> > >
> > > test generators required. The ICOM 756PRO3 passes this test, as
> does
> > >
> > > the Elecraft K3 and many other modern radios.
> > >
> > > Jerry W4UK
> > >
> > >
> > >
> > > _______________________________________________
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> > >
> > >
> > >
> >
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