Return-Path: Received: from mtain-di02.r1000.mx.aol.com (mtain-di02.r1000.mx.aol.com [172.29.64.6]) by air-dc09.mail.aol.com (v129.4) with ESMTP id MAILINDC093-86554d6aca4a226; Sun, 27 Feb 2011 17:03:54 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-di02.r1000.mx.aol.com (Internet Inbound) with ESMTP id B777A3800008D; Sun, 27 Feb 2011 17:03:52 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Ptohe-0001af-A1 for rs_out_1@blacksheep.org; Sun, 27 Feb 2011 22:02:58 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Ptohd-0001aW-K6 for rsgb_lf_group@blacksheep.org; Sun, 27 Feb 2011 22:02:57 +0000 Received: from mail-wy0-f171.google.com ([74.125.82.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Ptoha-00037v-UX for rsgb_lf_group@blacksheep.org; Sun, 27 Feb 2011 22:02:57 +0000 Received: by wyf22 with SMTP id 22so3865635wyf.16 for ; Sun, 27 Feb 2011 14:02:49 -0800 (PST) DKIM-Signature: v=1; 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Sun, 27 Feb 2011 14:02:47 -0800 (PST) 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> <292024.46473.qm@web28505.mail.ukl.yahoo.com> <4D6AC0FD.8070204@dsl.pipex.com> <593715.81193.qm@web28516.mail.ukl.yahoo.com> From: Roger Lapthorn X-Mailer: iPod Mail (8C148) In-Reply-To: <593715.81193.qm@web28516.mail.ukl.yahoo.com> Message-Id: Date: Sun, 27 Feb 2011 22:04:41 +0000 To: "rsgb_lf_group@blacksheep.org" Mime-Version: 1.0 (iPod Mail 8C148) DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: VLF: G3XIZ on 8970 Hz Content-Type: multipart/alternative; boundary=Apple-Mail-1-562021783 Content-Transfer-Encoding: 7bit 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, TO_ADDRESS_EQ_REAL 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-m015.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d40064d6aca48043b X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --Apple-Mail-1-562021783 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Sorry Chris, but I am in Kent at the moment (younger grandson 2 today) so= was unable to look for you today. 73s Roger G3XBM Via my 2.4GHz handheld (iPod Touch 4g) On 27 Feb 2011, at 21:50, Chris Osborn wrote: > Hello Chris, >=20 > Thanks for looking / listening. > I QRT'd at 21.10 after about 4 and a half hours. >=20 > I've finished the MK II loading coil winding and hope to have it working= by next weekend. > Hopefully you'll pick me up then. >=20 > 73 Chris XIZ >=20 > From: Chris Dillon > To: rsgb_lf_group@blacksheep.org > Sent: Sun, 27 February, 2011 21:24:13 > Subject: Re: VLF: G3XIZ on 8970 Hz >=20 > Hi Chris - been listening since about 6.30 but unfortunately nothing at= all from you so far tonight. >=20 > 73 Chris G3WCD >=20 > On 27/02/2011 18:45, Chris Osborn wrote: >>=20 >> Hello Stefan, >>=20 >> Thanks for the good wishes and advice. >> Eddie G3ZJO (about 50 km) is looking for my signal. >>=20 >> The aerial current is about 0.15 A and the TX power about 100 watts RF. >>=20 >> I have built an off air frequency standard which is locked to Droitwich= (198 kHz) >> It has a 10 kHz output and maybe I can use that in future for more prec= ise frequency generation. >>=20 >> I am presently making a more efficient loading coil which should be rea= dy soon. >>=20 >> 73 Chris G3XIZ >>=20 >>=20 >> From: Stefan Sch=C3=A4fer >> To: rsgb_lf_group@blacksheep.org >> Sent: Sun, 27 February, 2011 18:23:33 >> Subject: Re: VLF: G3XIZ on 8970 Hz >>=20 >> Hello Chris,=20 >>=20 >> I wish you good luck! >>=20 >> What will be your antenna current and what is the current maximum TX po= wer?=20 >>=20 >> Do you have enough RX stations in a radius of some 100 km? >>=20 >> 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 sens= e 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. >>=20 >> I see a real chance to see a trace of you if you send a 24 hour carrier= , locked. >>=20 >> 73, Stefan/DK7FC >>=20 >>=20 >>=20 >> Am 27.02.2011 17:14, schrieb Chris Osborn: >>>=20 >>> Very well done. >>>=20 >>> I have been trying for the past 2 weekends to launch my balloons or ki= te aerial but the weather >>> has been unsuitable. >>>=20 >>> Inspired by ops using just their home aerials I shall give my 40m end= fed inverted 'L' another try. >>>=20 >>> I shall transmit a constant carrier on >>>=20 >>> 8.976 661 7 kHz >>>=20 >>> for the next few hours in the hope that someone will pick up my signal= s. >>>=20 >>> At some point I could try a longer period maybe over night. >>>=20 >>> 73 Chris G3XIZ >>>=20 >>> From: Stefan Sch=C3=A4fer >>> To: rsgb_lf_group@blacksheep.org >>> Sent: Sat, 26 February, 2011 22:35:07 >>> Subject: Re: VLF: OE5ODL,OE3GHB and DF6NM on 8970 Hz >>>=20 >>> ...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 >>>=20 >>> It is remarkable that all the 3 stations use their home antenna, no ki= tes or balloons, TX power below 300 W! This shows what others could do on= VLF as well. My distance to OE3GHB is 590 km! >>>=20 >>> Also it is interesting that 3 QSOs could easily take place in a bandwi= dth of 10 mHz :-) >>>=20 >>> It's fun and fascinating, thus not useless :-) >>>=20 >>> 73, Stefan/DK7FC >>>=20 >>>=20 >>> Am 26.02.2011 23:03, schrieb Stefan Sch=C3=A4fer: >>> > VLF, >>> >=20 >>> > Capture OE5ODL (8970.005 Hz, until 14 UTC), OE3GHB (8969.98 Hz), DF6= NM (from 13 UTC, first drifting, then lock to 8970.002 Hz) in 424 uHz >>> >=20 >>> > 73, Stefan/DK7FC >>> >=20 >>>=20 >>>=20 >>=20 >=20 >=20 --Apple-Mail-1-562021783 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
Sorry Chris, but I am in Kent at the= moment (younger grandson 2 today) so was unable to look for you today.

73s
Roger G3XBM

Via my 2.4GHz hand= held (iPod Touch 4g)

On 27 Feb 2011, at 21:50, Chris Osborn= <g3xiz@yahoo.co.uk> wrote:=

Hello Chris,
Thanks for looking / listening.
I QRT'd at 21.10 after about 4 and a= half hours.

I've finished the MK II loading coil winding and hope= to have it working by next weekend.
Hopefully you'll pick me up then.<= br>
73 Chris XIZ

=
From: Chri= s Dillon <c.r.dillon@dsl.pi= pex.com>
To: rsgb_lf_group@blacksheep.org
Sent: Sun, 27 February, 2011 21:24:13Subject: Re: VLF: G3XIZ= on 8970 Hz

=20 =20 =20 =20 Hi Chris - been listening since about 6.30 but unfortunately nothing at all from you so far tonight.

73 Chris G3WCD

On 27/02/2011 18:45, Chris Osborn wrote:
=20
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 (198 kHz)
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 efficient loading coil which should be ready soon.

73 Chris G3XIZ


From: Stefan Sch=C3=A4fer <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:
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=C3=A4fer <schaefer@iup.uni-heidelberg.de<= /a>>
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_Gr= abber.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=C3=A4fer:
> 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
>





=3D --Apple-Mail-1-562021783--