Return-Path: Received: from mtain-mc03.r1000.mx.aol.com (mtain-mc03.r1000.mx.aol.com [172.29.96.75]) by air-dc04.mail.aol.com (v129.4) with ESMTP id MAILINDC043-86504c0a8f18c7; Sat, 05 Jun 2010 13:53:28 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mc03.r1000.mx.aol.com (Internet Inbound) with ESMTP id E4E4A380000B2; Sat, 5 Jun 2010 13:53:26 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OKxY2-0007ih-7o for rs_out_1@blacksheep.org; Sat, 05 Jun 2010 18:52:42 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OKxY0-0007i6-Uu for rsgb_lf_group@blacksheep.org; Sat, 05 Jun 2010 18:52:40 +0100 Received: from out1.ip08ir2.opaltelecom.net ([62.24.128.244]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OKxXy-0005vR-Ch for rsgb_lf_group@blacksheep.org; Sat, 05 Jun 2010 18:52:40 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AvAFAJ8rCkxcEYB//2dsb2JhbACBQ4Fai24DgwGMRnGtTZAVhCluBA X-IronPort-AV: E=Sophos;i="4.53,367,1272841200"; d="scan'208,217";a="450020311" Received: from unknown (HELO xphd97xgq27nyf) ([92.17.128.127]) by out1.ip08ir2.opaltelecom.net with SMTP; 05 Jun 2010 18:52:32 +0100 Message-ID: <006101cb04d7$ddd75e70$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: <657E7065AC4C454AB63F6C7C2FF043F6@Black> , <003101cb04c2$0913cc10$0401a8c0@xphd97xgq27nyf> <1607287044.1492139.1275754813942.JavaMail.fmail@mwmweb034>, <003f01cb04d5$f36f64a0$0401a8c0@xphd97xgq27nyf> <129996707.1513139.1275760074750.JavaMail.fmail@mwmweb034> Date: Sat, 5 Jun 2010 18:52:29 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,HTML_TAG_EXIST_TBODY=0.126 Subject: Re: LF: Re: Success with my new Ground Antenna on Dreamer's Band Content-Type: multipart/alternative; boundary="----=_NextPart_000_005E_01CB04E0.3F70E5E0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,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-sid: 3039ac1d604b4c0a8f165723 X-AOL-IP: 193.82.116.20 ------=_NextPart_000_005E_01CB04E0.3F70E5E0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable ie a MIRACLE !!! ----- Original Message -----=20 From: Horst St=C3=B6cker=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Saturday, June 05, 2010 6:47 PM Subject: Re: LF: Re: Success with my new Ground Antenna on Dreamer's= Band Hi Mal, serious question? OK, 6000km! Horst DO1KHS/DI2AN ----------------------------------------------------------------------= ------ Von: mal hamilton Gesendet: 05.06.2010 19:38:46 An: rsgb_lf_group@blacksheep.org Betreff: LF: Re: Success with my new Ground Antenna on Dreamer's= Band What are u aiming for with this system, 600m or 600km. g3kev ----- Original Message ----- From: Horst St=C3=B6cker To: rsgb_lf_group@blacksheep.org Sent: Saturday, June 05, 2010 5:20 PM Subject: VLF: Success with my new Ground Antenna on Dreamer's Ba= nd Hello, the 800m Ground Antenna Test is still a future project - transmi= ssions planned on 23. to 25. July from the Erpeler Ley near Bonn. But today I did the second Ground Antenna Test at my home QTH.= Two copper rods of about 50cm were directed and splitted in the middl= e of a 100m line. 10m of RG58 connect this point with the equipment in= my garage: torroid stepup transformer, 300 W car amplifier and my new= communication test system as sweep oscillator betwen 8,7 an 8,9 kHz. After my disappointing first test with the 30m base I di not exp= ect too mauch. But the signal was audible in a range of 600m depending= on the environment. Horst DO1KHS/DI2AN ----------------------------------------------------------------------= -- Von: mal hamilton Gesendet: 05.06.2010 17:16:12 An: rsgb_lf_group@blacksheep.org Betreff: Re: VLF: Two-Way QSO on Dreamer's Band Gary What sort of strength are u receiving the Alpha signals This might give u an idea how strong amateur signals are likel= y to be by comparison There is not much information available from UK stations about= their receiving capability de mal/g3kev ----- Original Message ----- From: Gary - G4WGT To: rsgb_lf_group@blacksheep.org Sent: Saturday, June 05, 2010 2:20 PM Subject: Re: VLF: Two-Way QSO on Dreamer's Band Marcus, Walter, LF,=20 Well done for your VLF 8.97 Hz 2 - way communication. Keep up the good work. Monitoring most of the time here but nothing seen as yet, on= e day I may see something. 73 Gary - G4WGT - North West England - IO83QO On 4 June 2010 21:59, Markus Vester = wrote: Dear LF, this morning, June 4th between 6 and 8 UT, Walter (DJ2LF)= and myself (DF6NM) were able to successfully conduct a two-way contac= t (aka "QSO") on 8.97 kHz. The distance between us is 20.2 km, well ou= tside the reactive near field zone (lamda / 2pi =3D 5.3 km). Both of us were using our small backyard Marconi antennas= at home, for transmit and receive. Walter's antenna has 260 pF at an= estimated effective height of about 5 m. He achieved about 370 mA cur= rent, resulting in a radiated power of about 5 uW (EMRP). I also got= 5 uW from 270 mA into 240 pF at about 7 m. I resonated the antenna us= ing the same little "yoghurt coil" described a while ago, having 1.3= henry from 9 x 480 turns of 0.2 mm magnet wire, and a room-temperatur= e DC resistance of 820 ohms. Walter used a scaled up version of this= coil, about 25 cm diameter and 60 cm long, consisting of seven polypr= opylene household buckets inserted into one another. Each bucket has= 460 turns of 0.4 mm wire on it, about 320 ohms total DC resistance.= Each of us applied approximately 100 W of "RF" power from a car-HiFi= amplifier. Reception was done by soundcard, without preamplification.= We set Spectrum Lab to 0.95 mHz FFT bandwidth, with noise blanking on= , and samplerate tracking based on the German 23.4 kHz MSK signal. We= chose to transmit 30 minute dashes, separated by 15 minute quiet inte= rvals to allow for FFT processing delay. We employed a special "micro-QSO" format, which was design= ed to exchange the minimum single-bit report and confirmation in only= three turnovers, each containing a single dash. Station identificatio= n was by frequency alone, with preassigned pairs (8969.92 / 8970.02 Hz= for DJ2LF, 8970.0 / 8970.1 Hz for DF6NM). Generally the lower frequen= cy was assigned to a negative response (ie. "not confirmed"), whereas= the upper one is positive ("received ok"). DF6NM started by transmitting a carrier on his lower frequ= ency, from 4:00 to 4:30 UT. This was indeed seen by DJ2LF, who replied= on his upper frequency from 4:45 to 5:15, reporting positive receptio= n. Then DF6NM confirmed reception on the upper frequency from 5:30 to= 6:00. The whole procedure took two hours. Attached are screenshots from both sides. Unfortunately th= e QRN level this morning was much worse than we had hoped for, with ac= tive thunderstorms in South Italy, Poland and Belorussia. To my surpri= se, our dashes still made it through and were unambiguously visible,= with an estimated SNR of 6 to 8 dB. Walter's signal can actually stil= l be seen between my own dashes on my VLF grabber http://www.mydarc.de= /df6nm/vlf/vlfgrabber.htm . As far as we know, this was probably the first two-way ama= teur QSO on VLF, using truely radiated fields. Another dream came true= ... Best regards, Markus (DF6NM) =20 =20 NEU: WEB.DE DSL f=C3=BCr 19,99 EUR/mtl. und ohne Mindest-L= aufzeit! =20 http://produkte.web.de/go/02/=20 =20 =20 NEU: WEB.DE DSL f=C3=BCr 19,99 EUR/mtl. und ohne Mindest-Laufz= eit! =20 http://produkte.web.de/go/02/=20 ------=_NextPart_000_005E_01CB04E0.3F70E5E0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
ie a MIRACLE !!!
 
----- Original Message -----
Sent: Saturday, June 05, 2010= 6:47=20 PM
Subject: Re: LF: Re: Success= with my new=20 Ground Antenna on Dreamer's Band

Hi Mal,
serious question? OK, 6000km!
Horst=20 DO1KHS/DI2AN
Von: mal hamilton <g3kevmal@talktalk.net>
Gesendet:=20 05.06.2010 19:38:46
An: rsgb_lf_group@blacksheep.org
Betreff:<= /B>=20 LF: Re: Success with my new Ground Antenna on Dreamer's Band
What= are u aiming=20 for with this system, 600m or 600km.
g3kev<= /SPAN>
 
----- Original Message -----
Sent: Saturday, June 05,= 2010 5:20=20 PM
Subject: VLF: Success wit= h my new=20 Ground Antenna on Dreamer's Band
Hello,
the 800m Ground Antenna Test is still a=20 future project - transmissions planned on 23. to 25. July from= the Erpeler=20 Ley near Bonn.
But today I did the second Ground Antenna Test= at my=20 home QTH. Two copper rods of about 50cm were directed and splitt= ed in the=20 middle of a 100m line. 10m of RG58 connect this point with the= equipment=20 in my garage: torroid stepup transformer, 300 W car amplifier an= d my new=20 communication test system as sweep oscillator betwen 8,7 an 8,9= =20 kHz.
After my disappointing first test with the 30m base I di= not=20 expect too mauch. But the signal was audible in a range of 600m= depending=20 on the environment.
Horst=20 DO1KHS/DI2AN
Von: mal hamilton=20 <g3kevmal@talktalk.net>
Gesendet: 05.06.2010= =20 17:16:12
An: rsgb_lf_group@blacksheep.org
Betr= eff:=20 Re: VLF: Two-Way QSO on Dreamer's Band

Gary
Wh= at sort of=20 strength are u receiving the Alpha signals
Th= is might=20 give u an idea how strong amateur signals are likely to be by= =20 comparison
Th= ere is not=20 much information available from UK stations about their receiv= ing=20 capability
de= =20 mal/g3kev
 
 
----- Original Message -----=
Sent: Saturday, June= 05, 2010=20 2:20 PM
Subject: Re: VLF: Two= -Way QSO on=20 Dreamer's Band
Marcus, Walter, LF,=20
Well done for your VLF 8.97 Hz 2 - way communication.
Keep up the good work.
Monitoring most of the time here but nothing seen as ye= t, one day=20 I may see something.
73
Gary - G4WGT - North West England - IO83QO

On 4 June 2010 21:59, Markus Vester= =20 <markusvester@aol.com>=20 wrote:
 
 
 
 
 
 
http://www.mydarc.de/df6nm/vlf/vlfgrabber.htm=20 .
 
 
NEU:=20 WEB.DE DSL f=C3=BCr 19,99 EUR/mtl. und ohne=20 Mindest-Laufzeit!   
http://produkte.web= .de/go/02/
  

3D""
NEU:=20 WEB.DE DSL f=C3=BCr 19,99 EUR/mtl. und ohne=20 Mindest-Laufzeit!   
http://produkte.web.de/= go/02/
------=_NextPart_000_005E_01CB04E0.3F70E5E0--