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Message-ID: <006401ca6fb2$d08b6aa0$0900a8c0@lark>
From: "Alan Melia" <alan.melia@btinternet.com>
To: <rsgb_lf_group@blacksheep.org>
References: <220029.15482.qm@web63602.mail.re1.yahoo.com>
Date: Fri, 27 Nov 2009 22:39:36 -0000
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Subject: Re: LF: Re: How do I use Spectrum Lab as a VLF Soft Receiver ?
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Hi Andy
Ok on the www.weaksignals.com (no space) not working, it goes ok from here
using the clickable link I put in ....must be something at your end, but the
SDR site gives the same info. Your bandwidth depends upon what sampling rate
you can use on your card, and whether there is any filtering on it which
will preclude higher sample rates showing the appropriate spectrum. My
Delta-44 gives a nice 0-48k spectrum.
Enjoy playing....WinRad is quite useful for chasing and identifying local
interference as well as listening.

Alan G3NYK


----- Original Message -----
From: "Andy - KU4XR" <ku4xr@yahoo.com>
To: <rsgb_lf_group@blacksheep.org>; <lowfer@mailman.qth.net>
Sent: Friday, November 27, 2009 10:02 PM
Subject: Re: LF: Re: How do I use Spectrum Lab as a VLF Soft Receiver ?


Thanks to all for the responses so far. My current interest is to
use the sound card as if it were a receiver, and software to make
it work like one.
I have downloaded " WINRAD " ( Win98SE version ), and will
experiment with it this weekend.
A note on the web address for the software; the  weak signals.com
link does not work, but google-ing " WINRAD " found this address
that is correct.

http://www.sdrham.com/

I am still interested in any and all comments, suggestions,
user experiences, and so on. Thank you in advance for any replies.

73 all :::



Andy - KU4XR - EM75xr - Friendsville, TN.
LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
Coordinates:  N:  35* 43' 54" - W:  84* 3' 16"
http://www.myspace.com/beaconxr
http://webpages.charter.net/ku4xr/


--- On Fri, 11/27/09, Alan Melia <alan.melia@btinternet.com> wrote:

> From: Alan Melia <alan.melia@btinternet.com>
> Subject: LF: Re: How do I use Spectrum Lab as a VLF Soft Receiver ?
> To: rsgb_lf_group@blacksheep.org
> Date: Friday, November 27, 2009, 3:42 PM
> I am not sure about this you need to
> scour the help files but the SID
> receiver is not meant for listening to it is to produce a
> sig-strength v
> time plot. You might need some fairly crafty software
> connection for Spec
> Lab Wolf will maybe reply he does monitor.
>
> As an easy alternative try WinRad by Alberto
> www.weaksignals.com and just
> stick a wire into the mic input and you get a full SDR
> receiver. I am not
> sure you get sound out even then you may be Virtual Audio
> Cable, or perhaps
> Alberto has a hook in the code now. The thing is you are
> using the card
> twice....once to pruduce the receiver and again to produce
> the audio output.
> I cant check at the moment I am still in the process of
> loading up this PC.
>
> Best Wishes
> Alan G3NYK
>
> ----- Original Message -----
> From: "Andy - KU4XR" <ku4xr@yahoo.com>
> To: <lowfer@mailman.qth.net>;
> <rsgb_lf_group@blacksheep.org>
> Sent: Friday, November 27, 2009 7:14 PM
> Subject: LF: How do I use Spectrum Lab as a VLF Soft
> Receiver ?
>
>
> > Hello All:
> >
> > I have recently been trying to get a soundcard VLF
> receiver
> > going. I found a SAQ receiver on the web designed by
> > Johan - SM6LKM. It works good I suppose never having
> tried
> > this before. I can hear " Radio noise " in other
> words, it
> > actually sounds like a receiver. When I connect
> enough
> > coils in series, with a variable cap to ground to make
> a
> > pre-selector, The noise floor will rise 20 dB when I
> tune
> > the Cap. and you can see the peak move across the
> spectrum
> > display. However, that's as far as you can go, You
> can't
> > choose a sound card, it automatically chooses the
> windows
> > default card, and I haven't found a way to use DSP
> filtering
> > with it, since everything is based on the sound card
> alone.
> >
> > Now for Spectrum Lab, It has a built in " SID "
> receiver,
> > and the built in DSP filters work in the program. I
> just can't
> > get it to work !!!!! All I can get is low freq. hum,
> or
> > digital noise. It makes no difference with or without
> an Ant.
> > I've changed sound card sample rates, and FFT
> settings,
> > nothing works for me.
> >
> > Does anyone have any suggestions for me to try
> ?? Thank you.
> >
> > 73 to all :::
> >