Return-Path: Received: from mtain-mj02.r1000.mx.aol.com (mtain-mj02.r1000.mail.aol.com [172.21.164.86]) by air-dc07.mail.aol.com (v129.4) with ESMTP id MAILINDC071-86034d6a96f8b6; Sun, 27 Feb 2011 13:24:57 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mj02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 36A4838000083; Sun, 27 Feb 2011 13:24:54 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PtlHO-0008M5-Qb for rs_out_1@blacksheep.org; Sun, 27 Feb 2011 18:23:38 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PtlHO-0008Lv-4j for rsgb_lf_group@blacksheep.org; Sun, 27 Feb 2011 18:23:38 +0000 Received: from relay.uni-heidelberg.de ([129.206.100.212]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PtlHM-0007wE-Qs for rsgb_lf_group@blacksheep.org; Sun, 27 Feb 2011 18:23:38 +0000 Received: from ix.urz.uni-heidelberg.de (cyrus-portal.urz.uni-heidelberg.de [129.206.100.176]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id p1RINZpQ025572 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 27 Feb 2011 19:23:35 +0100 Received: from extmail.urz.uni-heidelberg.de (extmail.urz.uni-heidelberg.de [129.206.100.140]) by ix.urz.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id p1RINZk8015057 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 27 Feb 2011 19:23:35 +0100 Received: from [129.206.196.27] (vpn027a.rzuser.uni-heidelberg.de [129.206.196.27]) by extmail.urz.uni-heidelberg.de (8.13.4/8.13.1) with ESMTP id p1RINWiH004186 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 27 Feb 2011 19:23:34 +0100 Message-ID: <4D6A96A5.70804@iup.uni-heidelberg.de> Date: Sun, 27 Feb 2011 19:23:33 +0100 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.11) Gecko/20100711 Thunderbird/3.0.6 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4D68D907.1000005@iup.uni-heidelberg.de> <1298717758.4379.2.camel@gerhard-desktop> <483B525F6C7E42D1B5D226AB3E96611D@White> <4D6978CB.3000205@iup.uni-heidelberg.de> <4D69801B.7050907@iup.uni-heidelberg.de> <279103.46669.qm@web28506.mail.ukl.yahoo.com> In-Reply-To: <279103.46669.qm@web28506.mail.ukl.yahoo.com> X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RATWARE_GECKO_BUILD=1.426 Subject: Re: VLF: G3XIZ on 8970 Hz Content-Type: multipart/alternative; boundary="------------040404060707010903040500" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.0 required=5.0 tests=HTML_20_30,HTML_MESSAGE, HTML_TITLE_EMPTY autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G x-aol-sid: 3039400c89a44d6a96f62461 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) --------------040404060707010903040500 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay.uni-heidelberg.de id p1RINZpQ025572 Hello Chris, I wish you good luck! What will be your antenna current and what is the current maximum TX power= ? Do you have enough RX stations in a radius of some 100 km? If you want to do a test in transmitting a 24 hours accurate carrier, i=20 could set up a "60000" window at your frequency. But it only makes sense= =20 if your TX is locked to a MSK transmitter (e.g. GBZ) or GPS. A OCXO or=20 so is drifting much to strong for a 47 uHz window. I see a real chance to see a trace of you if you send a 24 hour carrier,= =20 locked. 73, Stefan/DK7FC Am 27.02.2011 17:14, schrieb Chris Osborn: > Very well done. > > I have been trying for the past 2 weekends to launch my balloons or=20 > kite aerial but the weather > has been unsuitable. > > Inspired by ops using just their home aerials I shall give my 40m end=20 > fed inverted 'L' another try. > > I shall transmit a constant carrier on > > 8.976 661 7 kHz > > for the next few hours in the hope that someone will pick up my signals. > > At some point I could try a longer period maybe over night. > > 73 Chris G3XIZ > > ------------------------------------------------------------------------ > *From:* Stefan Sch=E4fer > *To:* rsgb_lf_group@blacksheep.org > *Sent:* Sat, 26 February, 2011 22:35:07 > *Subject:* Re: VLF: OE5ODL,OE3GHB and DF6NM on 8970 Hz > > ...now Markus appears at 17 dB SNR in my "DFCW-60000" window, exactly=20 > at 8970.0020 Hz, see=20 > http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html > > It is remarkable that all the 3 stations use their home antenna, no=20 > kites or balloons, TX power below 300 W! This shows what others could=20 > do on VLF as well. My distance to OE3GHB is 590 km! > > Also it is interesting that 3 QSOs could easily take place in a=20 > bandwidth of 10 mHz :-) > > It's fun and fascinating, thus not useless :-) > > 73, Stefan/DK7FC > > > Am 26.02.2011 23:03, schrieb Stefan Sch=E4fer: > > VLF, > > > > Capture OE5ODL (8970.005 Hz, until 14 UTC), OE3GHB (8969.98 Hz),=20 > DF6NM (from 13 UTC, first drifting, then lock to 8970.002 Hz) in 424 uHz > > > > 73, Stefan/DK7FC > > > > --------------040404060707010903040500 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hello Chris,

I wish you good luck!

What will be your antenna current and what is the current maximum TX power?

Do you have enough RX stations in a radius of some 100 km?

If you want to do a test in transmitting a 24 hours accurate carrier, i could set up a "60000" window at your frequency. But it only makes sense if your TX is locked to a MSK transmitter (e.g. GBZ) or GPS. A OCXO or so is drifting much to strong for a 47 uHz window.

I see a real chance to see a trace of you if you send a 24 hour carrier, locked.

73, Stefan/DK7FC



Am 27.02.2011 17:14, schrieb Chris Osborn:
Very well done.

I have been trying for the past 2 weekends to launch my balloons or kite aerial but the weather
has been unsuitable.

Inspired by ops using just their home aerials I shall give my 40m end fed inverted 'L' another try.

I shall transmit a constant carrier on

8.976 661 7 kHz

for the next few hours in the hope that someone will pick up my signals.

At some point I could try a longer period maybe over night.

73 Chris G3XIZ

From: Stefan Schäfer <schaefer@iup.uni-heidelberg.de>
To: rsgb_lf_group@blacksheep.org
Sent: Sat, 26 February, 2011 22:35:07
Subject: Re: VLF: OE5ODL,OE3GHB and DF6NM on 8970 Hz

...now Markus appears at 17 dB SNR in my "DFCW-60000" window, exactly at 8970.0020 Hz, see http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html

It is remarkable that all the 3 stations use their home antenna, no kites or balloons, TX power below 300 W! This shows what others could do on VLF as well. My distance to OE3GHB is 590 km!

Also it is interesting that 3 QSOs could easily take place in a bandwidth of 10 mHz :-)

It's fun and fascinating, thus not useless :-)

73, Stefan/DK7FC


Am 26.02.2011 23:03, schrieb Stefan Schäfer:
> VLF,
>
> Capture OE5ODL (8970.005 Hz, until 14 UTC), OE3GHB (8969.98 Hz), DF6NM (from 13 UTC, first drifting, then lock to 8970.002 Hz) in 424 uHz
>
> 73, Stefan/DK7FC
>


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