Return-Path: Received: from mtain-dh04.r1000.mx.aol.com (mtain-dh04.r1000.mx.aol.com [172.29.65.24]) by air-db02.mail.aol.com (v129.4) with ESMTP id MAILINDB024-86964d09346e2ad; Wed, 15 Dec 2010 16:34:38 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dh04.r1000.mx.aol.com (Internet Inbound) with ESMTP id ADB42380001B5; Wed, 15 Dec 2010 16:34:36 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PSyxx-0001k5-Gi for rs_out_1@blacksheep.org; Wed, 15 Dec 2010 21:32:53 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PSyxx-0001jw-0z for rsgb_lf_group@blacksheep.org; Wed, 15 Dec 2010 21:32:53 +0000 Received: from imr-ma02.mx.aol.com ([64.12.206.40]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PSyxt-0008Hv-Dd for rsgb_lf_group@blacksheep.org; Wed, 15 Dec 2010 21:32:53 +0000 Received: from mtaout-ma04.r1000.mx.aol.com (mtaout-ma04.r1000.mx.aol.com [172.29.41.4]) by imr-ma02.mx.aol.com (8.14.1/8.14.1) with ESMTP id oBFLWicd029113 for ; Wed, 15 Dec 2010 16:32:44 -0500 Received: from White (nrbg-4d073bd8.pool.mediaWays.net [77.7.59.216]) by mtaout-ma04.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id CAA6CE0000AB for ; Wed, 15 Dec 2010 16:32:41 -0500 (EST) Message-ID: <2BC81A9531464F4489983B15DD363051@White> From: "Markus Vester" To: References: <2D9F1290-9246-4DFD-A0E6-D9D58DEF00AC@numeo.fr> <4D08A0AA.6040408@iup.uni-heidelberg.de> <4D08C0DA.1030007@iup.uni-heidelberg.de> <8CD6A9D45929F4A-128-D8FB@webmail-d011.sysops.aol.com> Date: Wed, 15 Dec 2010 22:32:39 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,HTML_TAG_EXIST_TBODY=0.126 Subject: Re: LF: VLF - distances achjeved (home antennas) Content-Type: multipart/alternative; boundary="----=_NextPart_000_0012_01CB9CA7.FB338440" 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_50_60, HTML_FONTCOLOR_UNKNOWN,HTML_MESSAGE,HTML_TAG_EXISTS_TBODY, MISSING_OUTLOOK_NAME 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: 3039ac1d41184d09346c0317 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ------=_NextPart_000_0012_01CB9CA7.FB338440 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable John, in the "above-ground" category, it may be fair to have separate league= s for airborne antennas (kites, balloons), and backyard-sized Marconi= antennas. Stefan may disagree here ;-)) Of the latter type, I could contribute Paul's Nicholson's narrowband= detections of my 5 uW EMRP transmissions in October at 1027 km:=20 http://abelian.org/vlf/mv101009/ On a smaller scale, there was a unique VLF two-way contact with DJ2LF= across 20 km on June 4th, using the same equipment. Best 73, Markus (DF6NM) Am 15.12.2010 12:04, schrieb Stefan Sch=C3=A4fer:=20 Hi John, Am 15.12.2010 11:55, schrieb John Rabson:=20 I am writing a piece on VLF for the Cave Radio & Electronics Group= Journal and would like to include distance records. Can people pleas= e confirm that the following information is correct (or not)?=20 Above-ground antennas Hz ERP mW From To km=20 8970 58 Darmstadt Israel/Haifa 2873=20 6470 9 Darmstadt Poland/Warshaw 904=20 5170 5 Darmstadt Poland/Warshaw 904=20 =20 =20 =20 =20 =20 The QTH of SQ5BPF is Washaw. The rest is correct. Earth current antennas Hz TX power W Electrode spacing m From To km=20 8970 250 600 Heidelberg Roschbach 49.6=20 =20 =20 =20 =20 =20 =20 =20 =20 =20 =20 =20 =20 =20 =20 =20 =20 =20 =20 I did successful tests to Roschbach just on 8970 Hz, not on 6470 and= 5170. The distance is 49.6 km (since my earth antenna QTH is differen= t to the kite antenna QTH). Thanks too. 73, Stefan/DK7FC Thank you.=20 John F5VLF ------=_NextPart_000_0012_01CB9CA7.FB338440 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
John,
 
in the "above-ground" cat= egory, it=20 may be fair to have separate leagues for airborne antennas (kites= ,=20 balloons), and backyard-sized Marconi antennas. Stefan may= =20 disagree here ;-))
 
Of the latter type, I could contribute Paul's Nicholson's na= rrowband=20 detections of my 5 uW EMRP transmissions in October at 1027 km:=
 
On a smaller scale, there was a unique VLF two-way=20 contact with DJ2LF across 20 km on June 4th, using the=20 same equipment.
 
Best 73,
Markus (DF6NM)
 

Am 15.12.2010 12:04= , schrieb Stefan=20 Sch=C3=A4fer:
Hi John,

Am 15.12.2010 11:55, schrieb= John=20 Rabson:=20
I am writing a piece on VLF for the Cave= Radio &=20 Electronics Group Journal and would like to include distance recor= ds.=20  Can people please confirm that the following information is= correct=20 (or not)?=20

Above-ground=20 antennas

Hz
=
ERP mW
From
To
=
km
=
8970
58
=
Darmstadt
Israel/Haifa
2873
6470
9
<= /TD>
Darmstadt
Poland/Warshaw
904
5170
5
<= /TD>
Darmstadt
Poland/Warshaw
904





The QTH of SQ5BPF is=20 Washaw. The rest is correct.
E= arth current antennas

Hz
=
TX power W
Electrode spaci= ng=20 m
From
To
=
km
=
8970
250
600
Heidelberg
Roschbach
49.6
















=
I did=20 successful tests to Roschbach just on 8970 Hz, not on 6470 and 5170.= The=20 distance is 49.6 km (since my earth antenna QTH is different to the= kite=20 antenna QTH).

Thanks too.

73, Stefan/DK7FC
Thank you.
John F5VLF

= ------=_NextPart_000_0012_01CB9CA7.FB338440--