Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dk05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 84838380001F2; Tue, 15 Nov 2011 15:22:29 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RQPVb-0006WH-Ay for rs_out_1@blacksheep.org; Tue, 15 Nov 2011 20:21:31 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RQPVa-0006W8-Rc for rsgb_lf_group@blacksheep.org; Tue, 15 Nov 2011 20:21:30 +0000 Received: from blu0-omc1-s32.blu0.hotmail.com ([65.55.116.43]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RQPVY-00024C-Ly for rsgb_lf_group@blacksheep.org; Tue, 15 Nov 2011 20:21:30 +0000 Received: from BLU153-W34 ([65.55.116.9]) by blu0-omc1-s32.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Tue, 15 Nov 2011 12:21:21 -0800 Message-ID: X-Originating-IP: [138.32.32.166] From: Laurence KL7UK To: Date: Tue, 15 Nov 2011 11:21:21 -0900 Importance: Normal In-Reply-To: <4EC2C6EB.2080201@iup.uni-heidelberg.de> References: ,<66E491BAB91C48AF81191F4022525A14@DennisPC> <6FE757960E6C447781689D4F19A315AE@DennisPC>,<4EC2C6EB.2080201@iup.uni-heidelberg.de> MIME-Version: 1.0 X-OriginalArrivalTime: 15 Nov 2011 20:21:21.0783 (UTC) FILETIME=[23E9F070:01CCA3D4] X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Content-Type: multipart/alternative; boundary="_20e31029-9107-4f17-8898-be6e63b30dda_" Subject: RE: VLF: 8970 Hz transmissions, soon again here X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=FORGED_HOTMAIL_RCVD, 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-SCORE: 0:2:498809504:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1db4094ec2ca05106b X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --_20e31029-9107-4f17-8898-be6e63b30dda_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Stefan the wideband and 8970 snapper is still running in Alaska and "beamin= g" your way :-))=20 =20 Laurence http://kl7uk.com/VLFAlaska.html =20 =20 Date: Tue=2C 15 Nov 2011 21:09:15 +0100 From: Stefan.Schaefer@iup.uni-heidelberg.de To: rsgb_lf_group@blacksheep.org Subject: VLF: 8970 Hz transmissions=2C soon again here VLF=2C Am 15.11.2011 17:03=2C schrieb DENNIS EASTERLING:=20 [...] I also have a mini-whip=2C but this has been extended for VLF purposes. [...] ...which is good since soon there will be some activity again on 8970 Hz. I= f you like you can join in to the group of successful listeners on the 33 k= m band.=20 Yesterday i carried my TX coil to the fixed antenna here. Also the PA and v= ariometer part of course. I do inted to use the fixed antenna. I did some calculations about the radiation resistance and losses and power= at maximum voltage (50 kV rms on the wire) and found that the ERP will be = about 10 dB higher than expected=2C i.e. i could radiate something in the r= ange of many 100 uW up to 1 mW or theoretically up to 2 mW. We will see and= measure.=20 Paul Nicholsen reported about a very senistive receiver in USA that allows = long time integration=2C i.e. not producing a spectrogram but integrating a= given TX time into a single bin=2C like Paul usually does.=20 Here on the fixed antenna i could do night transmissions. 500W TX power key= down for 24h is no problem (as long as there is no rain). So i am optimistic and looking forward to some new work on the dreamers ban= d!=20 Also i would be interested if there is (still) some interest in VLF in this= group. For Paul=2C a endless straight "carrier" would be the optimium whil= e a radio amateur may like to have some true ID and maybe a message to be r= ead and displayed. What about the grabber runners and new prepared VLF rece= iving stations? Probably i will start next week but may do some spontaneous tests before... 73=2C Stefan/DK7FC PS: I would like to see other VLF transmitting stations as well. What about= G3XIZ=2C DF6NM=2C OE3GHB=2C OE5ODL=2C OK2BVG=2C DJ8WX? We all could leave = some common traces again in the excellent dark spectrogram backgrounds! = --_20e31029-9107-4f17-8898-be6e63b30dda_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Stefan the wideband and 8970 snapper is still running in Alaska and "beamin= g" your way :-))
 =3B
Laurence

http://kl7uk.com/VLFAlaska.= html
 =3B
 =3B
Date: Tue=2C 15 Nov 2011 21:09:15 +0100
From: Stefan.Schaefer@iup.uni-he= idelberg.de
To: rsgb_lf_group@blacksheep.org
Subject: VLF: 8970 Hz tr= ansmissions=2C soon again here

VLF=2C

Am 15.1= 1.2011 17:03=2C schrieb DENNIS EASTERLING:=20
[...] I also have a mini-whip=2C but this has been = extended for
VLF purposes. [...]

..= .which is good since soon there will be some activity again on 8970 Hz. If = you like you can join in to the group of successful listeners on the 33 km = band.

Yesterday i carried my TX coil to the fixed antenna here. Als= o the PA and variometer part of course. I do inted to use the fixed antenna= .
I did some calculations about the radiation resistance and losses and = power at maximum voltage (50 kV rms on the wire) and found that the ERP wil= l be about 10 dB higher than expected=2C i.e. i could radiate something in = the range of many 100 uW up to 1 mW or theoretically up to 2 mW. We will se= e and measure.

Paul Nicholsen reported about a very senistive recei= ver in USA that allows long time integration=2C i.e. not producing a spectr= ogram but integrating a given TX time into a single bin=2C like Paul usuall= y does.
Here on the fixed antenna i could do night transmissions. 500W = TX power key down for 24h is no problem (as long as there is no rain).
<= BR>So i am optimistic and looking forward to some new work on the dreamers = band!

Also i would be interested if there is (still) some interest = in VLF in this group. For Paul=2C a endless straight "carrier" would be the= optimium while a radio amateur may like to have some true ID and maybe a m= essage to be read and displayed. What about the grabber runners and new pre= pared VLF receiving stations?

Probably i will start next week but ma= y do some spontaneous tests before...

73=2C Stefan/DK7FC

PS: = I would like to see other VLF transmitting stations as well. What about G3X= IZ=2C DF6NM=2C OE3GHB=2C OE5ODL=2C OK2BVG=2C DJ8WX? We all could leave some= common traces again in the excellent dark spectrogram backgrounds!

=
= --_20e31029-9107-4f17-8898-be6e63b30dda_--