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Date: Tue, 17 Nov 2009 18:02:42 +0000 (GMT)
From: M0FMT <m0fmt@yahoo.co.uk>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: G7NKS - Double Side Band: wspr?
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Tnx Alberto
=A0
I think the SR front end is quite wide infact so it would be really good=
 to have so much BW. Anyway=A0its not a problem to broarden the F/E filter=
ing. Currently use same input for Rx on 3.5 through 10 megs and my guess=
 is with degraded performance it would do 14megs as well.
=A0
Yep I have a choise of SC=A0ASIO driver for the current arrangement. I hav=
e to say that when all else fails Winrad just ploughs on such a robust app=
lication.
=A0
I currently integrate=A0all my Data applications with SDR on RX via=A0a VA=
C=A0a very=A0neat arrangement no messy multiple PC connectivity!. Built an=
 RXTX some time ago and now working on=A0Data TX side of things.
=A0
Anyway thanks again info well receiver here.=A0=A0=A0 73 petefmt=A0

--- On Tue, 17/11/09, Alberto di Bene <dibene@usa.net> wrote:


From: Alberto di Bene <dibene@usa.net>
Subject: Re: LF: G7NKS - Double Side Band: wspr?
To: rsgb_lf_group@blacksheep.org
Date: Tuesday, 17 November, 2009, 16:45


M0FMT wrote:=20





Veeeery interesting Alberto
=A0
Would that give me 192 Kc/s of tunable band width on my SDR radio given th=
e right software?
There has been a lot of debate on the softrock reflector but this one seem=
s to quite good. Do you have first hand experience of it? Christmas is com=
ing ...hee hee.
=A0
73 petefmt

Pete,

=A0 yes, I have one and I am quite satisfied with it. It can sample at 192=
 kHz, so it will give you from -96 to +96 kHz of band
around the center frequency tuned with the Softrock. Assuming of course th=
at the low pass filters of the Softrock let such
a large portion of the spectrum pass unaffected... usually they cut at a=
 value rather lower than that.... you will probably=20
have to change some capacitors.

The fact that it does not need an external power supply is handy too...

A suggestion : if you will use Winrad for it, set it to use the ASIO drive=
rs to interface the card. You will then fully benefit
of the 24-bit amplitude resolution.

73=A0 Alberto=A0 i2PHD




     =20

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<table cellspacing=3D"0" cellpadding=3D"0" border=3D"0" ><tr><td valign=3D=
"top" style=3D"font: inherit;"><DIV>Tnx Alberto</DIV>
<DIV>&nbsp;</DIV>
<DIV>I think the SR front end is quite wide infact so it would be really=
 good to have so much BW. Anyway&nbsp;its not a problem to broarden the F/=
E filtering. Currently use same input for Rx on 3.5 through 10 megs and my=
 guess is with degraded performance it would do 14megs as well.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Yep I have a choise of SC&nbsp;ASIO driver for the current arrangemen=
t. I have to say that when all else fails Winrad just ploughs on such a ro=
bust application.</DIV>
<DIV>&nbsp;</DIV>
<DIV>I currently integrate&nbsp;all my Data applications with SDR on RX vi=
a&nbsp;a VAC&nbsp;a very&nbsp;neat arrangement no messy multiple PC connec=
tivity!. Built an RXTX some time ago and now working on&nbsp;Data TX side=
 of things.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Anyway thanks again info well receiver here.&nbsp;&nbsp;&nbsp; 73 pet=
efmt&nbsp;<BR><BR>--- On <B>Tue, 17/11/09, Alberto di Bene <I>&lt;dibene@u=
sa.net&gt;</I></B> wrote:<BR></DIV>
<BLOCKQUOTE style=3D"BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT:=
 5px; MARGIN-LEFT: 5px"><BR>From: Alberto di Bene &lt;dibene@usa.net&gt;<B=
R>Subject: Re: LF: G7NKS - Double Side Band: wspr?<BR>To: rsgb_lf_group@bl=
acksheep.org<BR>Date: Tuesday, 17 November, 2009, 16:45<BR><BR>
<DIV id=3Dyiv277580742>M0FMT wrote:=20
<BLOCKQUOTE type=3D"cite">
<TABLE border=3D0 cellSpacing=3D0 cellPadding=3D0>
<TBODY>
<TR>
<TD style=3D"FONT-FAMILY: inherit; font-size-adjust: inherit; font-stretch=
: inherit" vAlign=3Dtop>
<DIV><I>Veeeery interesting Alberto</I></DIV>
<DIV><I>&nbsp;</I></DIV>
<DIV><I>Would that give me 192 Kc/s of tunable band width on my SDR radio=
 given the right software?<BR>There has been a lot of debate on the softro=
ck reflector but this one seems to quite good. Do you have first hand expe=
rience of it? Christmas is coming ...hee hee.</I></DIV>
<DIV><I>&nbsp;</I></DIV>
<DIV><I>73 petefmt</I><BR></DIV></TD></TR></TBODY></TABLE><BR></BLOCKQUOTE=
>Pete,<BR><BR>&nbsp; yes, I have one and I am quite satisfied with it. It=
 can sample at 192 kHz, so it will give you from -96 to +96 kHz of band<BR=
>around the center frequency tuned with the Softrock. Assuming of course=
 that the low pass filters of the Softrock let such<BR>a large portion of=
 the spectrum pass unaffected... usually they cut at a value rather lower=
 than that.... you will probably <BR>have to change some capacitors.<BR><B=
R>The fact that it does not need an external power supply is handy too...<=
BR><BR>A suggestion : if you will use Winrad for it, set it to use the ASI=
O drivers to interface the card. You will then fully benefit<BR>of the 24-=
bit amplitude resolution.<BR><BR>73&nbsp; Alberto&nbsp; i2PHD<BR><BR></DIV=
></BLOCKQUOTE></td></tr></table><br>



     =20

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