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Dennis,
You may not need a new sound card. There is a
program caled Quick Mix that is free.
You can save the sound card setting for different
modes and computer uses. The when you want
to use it for something else just load the settings
for that mode.
Joe Ivey
W4JSI
Age is mind over matter
If you don't mind,
it does not matter
----- Original Message -----
Sent: Wednesday, March 29, 2006 6:45
AM
Subject: [digitalradio] Re: Mark V Field
& PSK31
Well, to tidy this thing up.
Last night I
investigated my sound card mixer settings and found
that the volume
controls were maxxed out. I lowered the settings
to mid
point and now I am getting about 35 watts out with IMD of -
24dB, as
confirmed by my first PSK31 contact, a pleasant fellow in
Argentina. So the distortion was from the sound card,
not the
radio. I am thinking about getting a better quality
sound card but
in the meantime I can get a decent signal out by keeping
the volume
sound card in the middle of it's range.
Thanks to
everyone you gave suggestions.
Dennis AI8P
--- In
digitalradio@yahoogroups.com, "kd8biz" <[EMAIL PROTECTED]>
wrote:
>
> Thomas,
>
> Thanks for responding.
>
> I'm coming into the rig thru the PACKET connection, so mic gain
has
> no effect on the output.
>
> I have tried
turning the rig power down to drop IMD and also
leaving
> rig power
max and lowering sound input (using pot on MicroKeyer)
and
> in
both cases the IMD was pretty high (-14db).
>
> The only thing I
have thought of that I have not tried is leaving
> the pot alone and
actually turning down the soundcard volume -
maybe
> it is
distorting. I will try this tonight.
>
> Dennis
AI8P
>
>
>
> --- In digitalradio@yahoogroups.com,
"Thomas Giella KN4LF"
> <flcyclone@> wrote:
> >
>
> Dennis are you setting the rig output power control to the max.
of
> > approximately 100 watts? If you do that, set sound card volume
> sliders to a
> > mid range setting and then use the rig mic
gain control you
should
> be able
> > to get up to 100
watts output on PSK31 with no ALC reading and
a -
> 25 to -30
> > IMD. The Mark V Field put's out an exceptionally clean signal up
> to 100
> > watts output on the digital modes.
> >
> > BTW I have a website about the Mark V Field and the digital
modes
> at
> > http://www.kn4lf.com/kn4lf10.htm
.
> >
> > --... ...--,
> > Thomas F. Giella,
KN4LF
> > Lakeland, FL, USA
> > Grid Square EL97AW
>
> kn4lf@
> >
> > PODXS 070 PSK31 Club Member
#349
> > Feld Hell Club Member #FH141
> >
> >
Olivia MFSK Yahoo eGroup:
http://groups.yahoo.com/group/olivia_mfsk
>
> KN4LF Amateur & SWL Radio History: http://www.kn4lf.com
> > KN4LF 160
Meter Propagation Theory Notes:
> http://www.kn4lf.com/kn4lf8.htm
>
> Man Induced Climate Change Refuted:
> > http://www.kn4lf.com/globalwarminglie.htm
>
>
> > Date: Tue, 28 Mar 2006 02:08:11 -0000
> > From:
"kd8biz" <dconklin@>
> > Subject: PSK31 on Mark-V Field
>
>
> > Gurus,
> >
> > OK, I'm trying to get up
and running on PSK.
> >
> > Running a Mk-V Field with
Microham MicroKeyer, using Digipan.
I'm
> > using the IMD
Meter by kk7uq to monitor IMD. Diawa CN-801 power
> meter
>
> used to read output into a dummy load.
> >
> > I have
used the Easy Set to set the User function to PS31-U.
> >
>
> This is the behavior I am getting:
> >
> > Using the
User function (supposedly optimized for PSK):
> >
> > I get
a max of about 80 watts out at idle with the IMD never
>
getting
> > below about -15 db even at the lowest power output - not
good!
> >
> > Straight Packet setting - not User
function:
> >
> > I get a max of 4Watts out at idle but IMD
is never higher than -
> 34DB -
> > that's good.
> >
> > So how do I get up to 35 watts or so and still have decent IMD -
> this
> > just doesn't seem right to me.
> >
> > So what am I missing?
> >
> > Thanks for any
help.
> >
> > Dennis AI8P
> >
> >
> >
> > --
> > No virus found in this outgoing
message.
> > Checked by AVG Free Edition.
> > Version:
7.1.385 / Virus Database: 268.3.2/294 - Release Date:
>
3/27/2006
> >
>
Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org
Other areas of interest:
The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/
DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion)
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