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Date: Sun, 13 Sep 2009 22:44:31 +0100
Message-ID: <9afca2640909131444g28397a1v46cacc9d0f493406@mail.gmail.com>
From: Roger Lapthorn <rogerlapthorn@gmail.com>
To: rsgb_lf_group@blacksheep.org
DomainKey-Status: good (testing) 
Subject: Re: LF: My first WSPR spots
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Yes, I'll leave the WSPR signal running tonight John.

So far only G6ALB and G3XVL have reported the signal, but maybe the noise
floor will drop during the night and a few more might discern the tiny
signal.  I am enjoying this SO much and wish I'd done this much sooner, but
I only discovered WSPR a few weeks ago.

73s
Roger G3XBM


2009/9/13 John P-G <gm4slv@sighthound.demon.co.uk>

> Roger Lapthorn wrote:
>
>> If you could SEE my TX,  "antenna" and ATU you would realise how amazed I
>> am
>> at this report from G3XVL. My antenna is literally 15m of low horizontal
>> wire with about 2m of it vertical, a central heating ground and an ATU on
>> the bedroom table made from a ferrite rod and fed with 700mW from a
>> 2N3906/2N3904. This proves that 500kHz is possible with a
>> *really*minimalist station. I can only imagine what will be possible
>> with some
>> effort on my part.
>>
>
>
> Roger!
>
> Well done - it just shows what can be done with RF and a piece of wire....
>
> Assuming your ERP to be around the ~mW level we might be in with a chance
> even up to Shetland, given some suitable conditions.
>
> I've been doing some tests on 5MHz recently and have been receiving
> stations using TX powers in the milliwat, and sub-milliwatt, range.
>
> I've received G4ZFQ using TX power of 0.3mW at a range of 1061km.
>
> Obviously it's not fair to directly compare 5MHz and 500kHz - at least it
> shows what can be done with really low ERP.
>
> Please leave the WSPR running overnight and let's see what turns up in the
> wee small hours.
>
> Cheers,
>
> John
> GM4SLV
>
>
>
>


-- 
-------------------------------------------------------------
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
G3XBM    GQRP 1678      ISWL G11088

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Yes, I&#39;ll leave the WSPR signal running tonight John. <br><br>So far=
 only G6ALB and G3XVL have reported the signal, but maybe the noise floor=
 will drop during the night and a few more might discern the tiny signal.=
=A0 I am enjoying this SO much and wish I&#39;d done this much sooner, but=
 I only discovered WSPR a few weeks ago. <br>
<br>73s<br>Roger G3XBM<br><br><br><div class=3D"gmail_quote">2009/9/13 Joh=
n P-G <span dir=3D"ltr">&lt;<a href=3D"mailto:gm4slv@sighthound.demon.co.u=
k">gm4slv@sighthound.demon.co.uk</a>&gt;</span><br><blockquote class=3D"gm=
ail_quote" style=3D"border-left: 1px solid rgb(204, 204, 204); margin: 0pt=
 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class=3D"im">Roger Lapthorn wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rgb(204,=
 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
If you could SEE my TX, =A0&quot;antenna&quot; and ATU you would realise=
 how amazed I am<br>
at this report from G3XVL. My antenna is literally 15m of low horizontal<b=
r>
wire with about 2m of it vertical, a central heating ground and an ATU on<=
br>
the bedroom table made from a ferrite rod and fed with 700mW from a<br>
2N3906/2N3904. This proves that 500kHz is possible with a<br>
*really*minimalist station. I can only imagine what will be possible<br>
with some<br>
effort on my part.<br>
</blockquote>
<br>
<br></div>
Roger!<br>
<br>
Well done - it just shows what can be done with RF and a piece of wire....=
<br>
<br>
Assuming your ERP to be around the ~mW level we might be in with a chance=
 even up to Shetland, given some suitable conditions.<br>
<br>
I&#39;ve been doing some tests on 5MHz recently and have been receiving st=
ations using TX powers in the milliwat, and sub-milliwatt, range.<br>
<br>
I&#39;ve received G4ZFQ using TX power of 0.3mW at a range of 1061km.<br>
<br>
Obviously it&#39;s not fair to directly compare 5MHz and 500kHz - at least=
 it shows what can be done with really low ERP.<br>
<br>
Please leave the WSPR running overnight and let&#39;s see what turns up in=
 the wee small hours.<br>
<br>
Cheers,<br>
<br>
John<br>
GM4SLV<br>
<br>
<br>
<br>
</blockquote></div><br><br clear=3D"all"><br>-- <br>----------------------=
---------------------------------------<br><a href=3D"http://g3xbm-qrp.blo=
gspot.com/">http://g3xbm-qrp.blogspot.com/</a><br><a href=3D"http://www.g3=
xbm.co.uk">http://www.g3xbm.co.uk</a><br>
G3XBM =A0 =A0GQRP 1678 =A0 =A0 =A0ISWL G11088<br>

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