Return-Path: Received: from mtain-mp06.r1000.mx.aol.com (mtain-mp06.r1000.mx.aol.com [172.29.193.74]) by air-md09.mail.aol.com (v129.4) with ESMTP id MAILINMD093-8b964d3598533ad; Tue, 18 Jan 2011 08:40:35 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mp06.r1000.mx.aol.com (Internet Inbound) with ESMTP id E413538000086; Tue, 18 Jan 2011 08:40:32 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PfBmK-0001Ih-4R for rs_out_1@blacksheep.org; Tue, 18 Jan 2011 13:39:20 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PfBmJ-0001IY-28 for rsgb_lf_group@blacksheep.org; Tue, 18 Jan 2011 13:39:19 +0000 Received: from mail-iw0-f171.google.com ([209.85.214.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PfBmG-0002y6-96 for rsgb_lf_group@blacksheep.org; Tue, 18 Jan 2011 13:39:19 +0000 Received: by iwn2 with SMTP id 2so5916633iwn.16 for ; Tue, 18 Jan 2011 05:39:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=BeiIPEtOFYf+xHYmW4QZAlO9gLe4pK+wbs2ftBnTMEc=; b=qdAvvnH/8HwQxtwOZzjNWqJ4NLgYMw1hCFXohErIp+cEuIJykLGl/EAyQY5CMRp88A 6Gz4Rv8+RmvW8f0jkxdHkXBC9y51Q0AYtlyjBWsQwRbwtd6yMtW3cgC9zYh56YzPKIQo pq2Q5fw65a62O/9yqNpqvnr2CwtjImOMHVFc4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=qRnm1KmGZgh0QUVC9Q8CfJTc3ROg4Mqnzh8KM1Ed1QzWF48k5zh4Dhaf4UXEMRgu8f r5vnEH4Dov0e+Ti8yAavcPjYS8hhy4Sk1oFsNoyY6R9ulA3APIlJwDPLLIY698E3Uo2k 1W1kT4e5+8U24XP3Iw9354n5k5aneWkdSdpOA= MIME-Version: 1.0 Received: by 10.42.178.8 with SMTP id bk8mr6314963icb.99.1295357954238; Tue, 18 Jan 2011 05:39:14 -0800 (PST) Received: by 10.42.241.133 with HTTP; Tue, 18 Jan 2011 05:39:14 -0800 (PST) In-Reply-To: <001d01cbb70e$29721a80$0401a8c0@xphd97xgq27nyf> References: <001d01cbb70e$29721a80$0401a8c0@xphd97xgq27nyf> Date: Tue, 18 Jan 2011 13:39:14 +0000 Message-ID: From: Roger Lapthorn To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,HTML_TAG_EXIST_TBODY=0.126 Subject: Re: LF: Re: Progress on the Dreamer's Band Content-Type: multipart/alternative; boundary=90e6ba6e8f54b82770049a1f0691 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=HTML_50_60,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY 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-m202.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1dc14a4d3598507c49 X-AOL-IP: 195.171.43.25 X-Mailer: Unknown (No Version) --90e6ba6e8f54b82770049a1f0691 Content-Type: text/plain; charset=ISO-8859-1 Quite right Mal. What's new is approaching the band with *amateur* scale antennas and powers, plus the application of modern digital techniques to make up some of the difference in ERP by allowing signals otherwise lost deep in the noise to be detected and resolved. If my simple set-up can copy DK7FC's transmissions, which it can, then anyone with a reasonable PC and a few pounds worth of parts is able to join in the fun on receive as large receiving antennas are *not* required. Most amateurs will not want to invest the time and effort to make an antenna capable of *radiating* a useful VLF signal, but as a few stations have demonstrated that radiating a VLF signal *is* possible from a domestic amateur's garden. I'm really looking forward to the next 12 months on the Dreamer's Band with great excitement! 73s Roger G3XBM On 18 January 2011 12:49, mal hamilton wrote: > That someone was ME G3KEV > For the average radio amateur it is but a DREAM but with some dedication > and effort a few will get there in the end. > There was no mention of impossibility, all things are possible. Commercial > operators have been using these VLF frequencies for many years. Radio > amateurs are merely following in the footsteps of those that have been there > before. > > mal/g3kev > > > ----- Original Message ----- > *From:* Roger Lapthorn > *To:* rsgb_lf_group@blacksheep.org > *Sent:* Tuesday, January 18, 2011 8:15 AM > *Subject:* LF: Progress on the Dreamer's Band > > Dear All, > > Less than a year ago someone called 8-9kHz "The Dreamers Band" assuming > that results would be impossible, but here we are now with several stations > able to do scientific observations of long distance propagation changes on > the band! This is a band on which amateurs are yet again able to demonstrate > real science in action and where the true amateur radio spirit is alive and > well. > > If I may summarise the 8-9kHz band status today: > > - at least 6 stations active on TX capable of producing a far-field DX > signal > - probably around 20-30 stations able to receive such far field > transmissions > - around 10(?) grabbers monitoring the band either full or part time. > - best DX from a home QTH 699km > - best DX from a /P location 2873km > - others experimenting with earth mode propagation over local distances > - lots being learnt about antennas, receivers and propagation (and pipes > and wet fenland!). > - DX far-field transmission also successfully received on 6.47kHz and > 5.17kHz. > > And what next on the band? > > - some real 2-way QSOs (one was made last year in Germany over about 20km)? > - more home station far-field TX operation? > - whistler mode guided DX into the southern hemisphere? > - transatlantic reception? > - new coding techniques to allow QSO mode contacts in shorter time periods? > > In all this has been a *fantastic* year. The thrill of seeing Stefan's > 8.97kHz weak trace on my PC screen in December matched anything I had done > in amateur radio. So, well done to all those who have put so much effort > into breaking down barriers in our hobby and opening up a fresh place to > explore. A very special thank you to Stefan DK7FC. > > May I end with links for: > > - the sub-9kHz Yahoo Group open to anyone interested > - my sub-9kHz website where I try to make sub-9 news available to a wider audience > > 73s > Roger G3XBM > > -- > g3xbm-qrp.blogspot.com/ > www.g3xbm.co.uk > www.youtube.com/user/g3xbm > G3XBM GQRP 1678 ISWL G11088 > <#12d992ead1b6edac_> > <#12d992ead1b6edac_> <#12d992ead1b6edac_> <#12d992ead1b6edac_> > > -- g3xbm-qrp.blogspot.com/ www.g3xbm.co.uk www.youtube.com/user/g3xbm G3XBM GQRP 1678 ISWL G11088 <#> <#> <#> <#> --90e6ba6e8f54b82770049a1f0691 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Quite right Mal.

What's new is approaching the band with am= ateur scale antennas and powers, plus the application of modern digita= l techniques to make up some of the difference in ERP by allowing signals= otherwise lost deep in the noise to be detected and resolved.

If my simple set-up can copy DK7FC's transmissions, which it can,= then anyone with a reasonable PC and a few pounds worth of parts is able= to join in the fun on receive as large receiving antennas are not= required. Most amateurs will not want to invest the time and effort to ma= ke an antenna capable of radiating a useful VLF signal, but as a fe= w stations have demonstrated that radiating a VLF signal is possibl= e from a domestic amateur's garden.

I'm really looking forward to the next 12 months on the Dreamer= 9;s Band with great excitement!

73s
Roger G3XBM



<= div class=3D"gmail_quote">On 18 January 2011 12:49, mal hamilton <g3kevmal@talktalk.ne= t> wrote:
That someone was ME G3KEV
For the average radio amateur it is= but a DREAM but=20 with some dedication and effort a few will get there in the end.
There was no=A0mention of impossibili= ty, all=20 things are possible. Commercial operators have been using these VLF freque= ncies=20 for many years. Radio amateurs are merely following in the footsteps of th= ose=20 that have been there before.
=A0
mal/g3kev
=A0
----- Original Message -----
Sent: Tuesday, January 18, 2011= 8:15=20 AM
Subject: LF: Progress on the Dre= amer's=20 Band

Dear All,

Less than a year ago someone called 8-9k= Hz=20 "The Dreamers Band" assuming that results would be impossible,= but here we are=20 now with several stations able to do scientific observations of long dis= tance=20 propagation changes on the band! This is a band on which amateurs are ye= t=20 again able to demonstrate real science in action and where the true amat= eur=20 radio spirit is alive and well.

If I may summarise the 8-9kHz ban= d=20 status today:

- at least 6 stations active on TX cap= able of=20 producing a far-field DX signal
- probably around 20-30 stations able= to=20 receive such far field transmissions
- around 10(?) grabbers monitori= ng the=20 band either full or part time.
- best DX from a home QTH 699km
-= best DX=20 from a /P location 2873km
- others experimenting with earth mode=20 propagation over local distances
- lots being learnt about antennas,= =20 receivers and propagation (and pipes and wet fenland!).
- DX far-fiel= d=20 transmission also successfully received on 6.47kHz and 5.17kHz.
And=20 what next on the band?

- some real 2-way QSOs (one was made= last year=20 in Germany over about 20km)?
- more home station far-field TX=20 operation?
- whistler mode guided DX into the southern hemisphere?-=20 transatlantic reception?
- new coding techniques to allow QSO mode co= ntacts=20 in shorter time periods?

In all this has been a fantasti= c=20 year. The thrill of seeing Stefan's 8.97kHz weak trace on my PC scre= en in=20 December matched anything I had done in amateur radio.=A0 So, well done= to=20 all those who have put so much effort into breaking down barriers in our= hobby=20 and opening up a fresh place to explore. A very special thank you to Ste= fan=20 DK7FC.

May I end with links for:

- the sub-9kHz Yahoo Group=20 open to anyone interested
- my sub-9kHz website=20 where I try to make sub-9 news available to a wider=20 audience

73s
Roger G3XBM

--
g3xbm-qrp.blogspot.com/www.g3xbm.co.uk<= br>www.you= tube.com/user/g3xbm
G3XBM=A0=A0 GQRP 1678= =A0=A0=A0 ISWL=20 G11088
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=A0= =20
=
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=
=



--
g3xbm-qrp.blogspot.com/
www.g3xbm.co.uk
= www.youtub= e.com/user/g3xbm
G3XBM=A0=A0 GQRP 1678= =A0=A0=A0 ISWL G11088
= 3D""
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=20
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--90e6ba6e8f54b82770049a1f0691--