Return-Path: Received: from mtain-mi02.r1000.mx.aol.com (mtain-mi02.r1000.mail.aol.com [172.21.131.155]) by air-dd08.mail.aol.com (v129.4) with ESMTP id MAILINDD081-860e4d6a9c22b6; Sun, 27 Feb 2011 13:46:58 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mi02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 48E73380000A9; Sun, 27 Feb 2011 13:46:56 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Ptld5-0000LT-AX for rs_out_1@blacksheep.org; Sun, 27 Feb 2011 18:46:03 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Ptld4-0000LK-By for rsgb_lf_group@blacksheep.org; Sun, 27 Feb 2011 18:46:02 +0000 Received: from nm5.bullet.mail.ukl.yahoo.com ([217.146.182.226]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1Ptld4-0008N6-8P for rsgb_lf_group@blacksheep.org; Sun, 27 Feb 2011 18:46:02 +0000 Received: from [217.146.183.211] by nm5.bullet.mail.ukl.yahoo.com with NNFMP; 27 Feb 2011 18:45:56 -0000 Received: from [217.146.183.170] by tm4.bullet.mail.ukl.yahoo.com with NNFMP; 27 Feb 2011 18:45:56 -0000 Received: from [127.0.0.1] by omp1011.mail.ukl.yahoo.com with NNFMP; 27 Feb 2011 18:45:56 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 620145.33082.bm@omp1011.mail.ukl.yahoo.com Received: (qmail 46501 invoked by uid 60001); 27 Feb 2011 18:45:56 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.co.uk; s=s1024; t=1298832356; bh=6y/JIzZsnk7YU5wkCSCrJceRFP0NTLTnKLu6+ygSMAc=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=nXntK6LeQMH/hbp0ZDYbc2Fzti+5XTrGIYB2RYFrKeN4vzOnyFvjAkSz6WgYTrJ6uoIQLIkl9Ho4Uha5APdEpl2wI4c4j1m/30Oqu3/K+rawaWq1B68AuWwSMDNMpLA1ELVBcMsszcGXM4RRDHMKNYo1aBzPDabeUX4/ykkErsk= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.co.uk; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=FBfUDlmURnp6ZtVXSsusaY+qFND8K4S5VvnKIdovn/N4afnj9G43wGUsolHcwdYmvR3evq1K49szmtCKpbRxlpygOEcTpfWct0Ms9Vl3fgd8umhsPXw1EJvurfi2hXYtoBg5gFhU2O4dmo7ouoT/e/v6weWnIp76rFwSJgQm3fw=; Message-ID: <292024.46473.qm@web28505.mail.ukl.yahoo.com> X-YMail-OSG: zCtVvVwVM1m7G75ECItFf6ucyK8J_8I7rRRzAttXVMHTIlu UVL1DZPXPej_spnIemlubac7B1i8HB5Dtb.FKe8nJi8GP8Nrccz.aJD_3YaU kLxRkHpeMpcPzG.KC97Vvpaqon_ZM9MBXiNrBDHBk.6I8I0mlvk7gW.j003P LgDJSQRxODXQOfr9GLqY02Sgl5eFTWDsr0chpVd77zpnESMe_FG.aWA_xt.j dV_423Cs3_.sVDZ1pDo2.vXg_3.NnbWpm3l2RdlraMLjy9vi9GcH_o.4- Received: from [81.97.191.183] by web28505.mail.ukl.yahoo.com via HTTP; Sun, 27 Feb 2011 18:45:55 GMT X-Mailer: YahooMailRC/555 YahooMailWebService/0.8.109.292656 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> <4D6A96A5.70804@iup.uni-heidelberg.de> Date: Sun, 27 Feb 2011 18:45:55 +0000 (GMT) From: Chris Osborn To: rsgb_lf_group@blacksheep.org In-Reply-To: <4D6A96A5.70804@iup.uni-heidelberg.de> MIME-Version: 1.0 DomainKey-Status: good (testing) Subject: Re: VLF: G3XIZ on 8970 Hz Content-Type: multipart/alternative; boundary="0-870750611-1298832355=:46473" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE 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-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m024.1 ; domain : yahoo.co.uk DKIM : pass x-aol-sid: 3039400cdeca4d6a9c202ec9 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --0-870750611-1298832355=:46473 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Hello Stefan, Thanks for the good wishes and advice. Eddie G3ZJO (about 50 km) is looking for my signal. The aerial current is about 0.15 A and the TX power about 100 watts RF. I have built an off air frequency standard which is locked to Droitwich (1= 98=20 kHz) It has a 10 kHz output and maybe I can use that in future for more precise= =20 frequency generation. I am presently making a more efficient loading coil which should be ready= soon. 73 Chris G3XIZ ________________________________ From: Stefan Sch=E4fer To: rsgb_lf_group@blacksheep.org Sent: Sun, 27 February, 2011 18:23:33 Subject: Re: VLF: G3XIZ on 8970 Hz Hello Chris,=20 I wish you good luck! What will be your antenna current and what is the current maximum TX power= ?=20 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 co= uld=20 set up a "60000" window at your frequency. But it only makes sense if your= TX is=20 locked to a MSK transmitter (e.g. GBZ) or GPS. A OCXO or so is drifting mu= ch to=20 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:=20 Very well done. > >I have been trying for the past 2 weekends to launch my balloons or kite= aerial=20 >but the weather >has been unsuitable. > >Inspired by ops using just their home aerials I shall give my 40m end fed= =20 >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 at= =20 >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 kites= or=20 >balloons, TX power below 300 W! This shows what others could do on VLF as= well.=20 >My distance to OE3GHB is 590 km! > >Also it is interesting that 3 QSOs could easily take place in a bandwidth= of 10=20 >mHz :-) > >It's fun and fascinating, thus not useless :-) > >73, Stefan/DK7FC > > >Am 26.02.2011 23:03, schrieb Stefan Sch=E4fer: >> VLF, >>=20 >> Capture OE5ODL (8970.005 Hz, until 14 UTC), OE3GHB (8969.98 Hz), DF6NM= (from 13=20 >>UTC, first drifting, then lock to 8970.002 Hz) in 424 uHz >>=20 >> 73, Stefan/DK7FC >>=20 > > > =20 --0-870750611-1298832355=:46473 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Hello Stefan,

Thanks for the good wishes and advice.
E= ddie G3ZJO  (about 50 km) is looking for my signal.

The aerial= current is about 0.15 A and the TX power about 100 watts RF.

I hav= e built an off air frequency standard which is locked to Droitwich (198 kH= z)
It has a 10 kHz output and maybe I can use that in future for more= precise frequency generation.

I am presently making a more efficie= nt loading coil which should be ready soon.

73 Chris G3XIZ

<= /div>

From: Stefan Sch=E4fer <schaefer@iup.uni-heidelberg.de>
To: rsgb_lf_group@blacksheep.org
Sent: Sun, 27 February, 2011 18:23:33
= Subject: Re: VLF: G3XIZ on= 8970 Hz

=20 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:
=20
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 Sch=E4fer <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 Sch=E4fer:
> 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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