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Date: Fri, 31 Dec 2010 09:39:19 +0000
Message-ID: <AANLkTi=_gqLm9FcVvcVuNM0DX8n8q8ij3LU-vH6heMs9@mail.gmail.com>
From: Andy Talbot <andy.g4jnt@gmail.com>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: VLF - G3XIZ transmitting today
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SDR-IQ is running, with a 20Hz wide waterfall looking in 0.03Hz FFT bin
size.
It took 5 minutes for a calibration signal to show up on the screen.
 The paint is drying - slowly :-)0

If you want to send QRSS identifier at high speeds (relative) , suggest you
repeat at 10 or 15 minute *regular* intervals.  They will then show up up as
periodic reductions in carrier level of about 3dB or so.

If fact, tht just may be a suitable task for a new bit of software or a
PIC - a mixed QRSSSSSS generator


Andy
www.g4jnt.com



On 31 December 2010 08:44, Chris Osborn <g3xiz@yahoo.co.uk> wrote:

>  LF,
>
> I shall be transmitting VLF today starting at 09.00 Z
>
> Freq:    8.971 855 kHz (nominal but close)
> Mode : Continuous carrier with occasional QRSS identifier
> Aerial:  Initially:  40m inverted 'L' at 10m
>            Later:     balloon supported aerial at 50m
>
> Hopefully the system will keep going as the loading coil re-wind
> seems to have done the trick now that the varnish has dried.
>
> 73
> Chris
> G3XIZ
>
>

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<div>SDR-IQ is running, with a 20Hz wide waterfall looking in 0.03Hz FFT=
 bin size.</div>
<div>It took 5 minutes for=A0a calibration signal to show up on the screen=
.</div>
<div>
<div>The paint is drying - slowly :-)0</div>
<div>=A0</div></div>
<div>If you want to send QRSS identifier at high speeds (relative) , sugge=
st you repeat at 10 or 15 minute <u>regular</u> intervals.=A0 They will th=
en show up up as periodic reductions in carrier level of about 3dB or so.<=
/div>

<div>=A0</div>
<div>If fact, tht just may be a suitable task for a new bit of software or=
 a PIC=A0- a mixed QRSSSSSS generator</div>
<div>=A0</div>
<div>=A0</div>
<div>Andy</div>
<div><a href=3D"http://www.g4jnt.com/">www.g4jnt.com</a></div>
<div><br><br>=A0</div>
<div class=3D"gmail_quote">On 31 December 2010 08:44, Chris Osborn <span=
 dir=3D"ltr">&lt;<a href=3D"mailto:g3xiz@yahoo.co.uk">g3xiz@yahoo.co.uk</a=
>&gt;</span> wrote:<br>
<blockquote style=3D"BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8e=
x; PADDING-LEFT: 1ex" class=3D"gmail_quote">
<div>
<div style=3D"FONT-FAMILY: arial, helvetica, sans-serif; FONT-SIZE: 10pt">
<div>LF,<br><br>I shall be transmitting VLF today starting at 09.00 Z<br><=
br>Freq:=A0=A0=A0 8.971 855 kHz (nominal but close)<br>Mode : Continuous=
 carrier with occasional QRSS identifier<br>Aerial:=A0 Initially:=A0 40m=
 inverted &#39;L&#39; at 10m=A0 <br>
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Later:=A0=A0=A0=A0 balloon supported aerial=
 at 50m<br><br>Hopefully the system will keep going as the loading coil re=
-wind <br>seems to have done the trick now that the varnish has dried.<br>=
<br>73<br>Chris <br>G3XIZ<br>
</div></div><br></div></blockquote></div><br>

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