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Date: Sat, 16 Jul 2011 12:39:05 +0100
Message-ID: <CAHAQVWNO+ygqQm_D=URA34Fd4heSrjkOFATWiirBhM6rEfXF0Q@mail.gmail.com>
From: Roger Lapthorn <rogerlapthorn@gmail.com>
To: sub9khz@yahoogroups.com, rsgb_lf_group@blacksheep.org, 
	Eddie <g3zjo@talktalk.net>, GQRP@yahoogroups.com, 
	"Taylor, Paula" <paula.taylor@metoffice.gov.uk>
Subject: LF: VLF transmit test from East Cambridgeshire - Sunday July 17th
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Dear All,

On Sunday July 17th from 0800z-1600z (0900-1700BST) I will be transmitting a
*very long continuous carrier close to 8.7608kHz* which I will, at some
point, turn off during the test period to help ID. The TX will be my 5W
earth mode set-up with 20m spaced electrodes with elevated feed to the far
electrode.

If any stations with suitable equipment in the East Cambs area could look
for me (with frequency locked, very narrow, Spectrum Lab settings) I'd
appreciate it. The purpose of the test to see if any residual VLF signal is
detectable beyond the usual earth-mode coverage area. Ideally I need
stations in the 5-20km range from my QTH in Burwell, Cambs.

With earth-mode and QRSS3 the best I've achieved is just under 6km. It would
be wonderful to find the signal was (just) detectable at a somewhat greater
range using a very long carrier and suitable SpecLab RX settings. At some
point later in the year I shall be increasing the VLF TX power to 100-200W
which will improve chances of more distant reception.

73s
Roger G3XBM

-- 
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
http://www.youtube.com/user/g3xbm
https://sites.google.com/site/sub9khz/

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Dear All,<br><br>On Sunday July 17th from 0800z-1600z (0900-1700BST) I will=
 be transmitting a <u><b>very long=20
continuous carrier close to 8.7608kHz</b></u> which I will, at some point, =
turn off during the test period to help ID. The TX will be my 5W earth mode=
 set-up with 20m spaced electrodes with elevated feed to the far electrode.=
 <br>
<br>If any stations with suitable equipment in the East Cambs area could lo=
ok for me (with frequency locked, very narrow, Spectrum Lab settings) I&#39=
;d appreciate it. The purpose of the test to see if any residual VLF signal=
 is detectable beyond the usual earth-mode coverage area. Ideally I need st=
ations in the 5-20km range from my QTH in Burwell, Cambs.<br>
<br>With earth-mode and QRSS3 the best I&#39;ve achieved is just under 6km.=
 It would be wonderful to find the signal was (just) detectable at a somewh=
at greater range using a very long carrier and suitable SpecLab RX settings=
. At some point later in the year I shall be increasing the VLF TX power to=
 100-200W which will improve chances of more distant reception.<br>
<br>73s<br>Roger G3XBM<br clear=3D"all"><br>-- <br><a href=3D"http://g3xbm-=
qrp.blogspot.com/" target=3D"_blank">http://g3xbm-qrp.blogspot.com/</a><br>=
<a href=3D"http://www.g3xbm.co.uk" target=3D"_blank">http://www.g3xbm.co.uk=
</a><br>
<a href=3D"http://www.youtube.com/user/g3xbm" target=3D"_blank">http://www.=
youtube.com/user/g3xbm</a><br><a href=3D"https://sites.google.com/site/sub9=
khz/" target=3D"_blank">https://sites.google.com/site/sub9khz/</a><br><br>

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