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[195.171.43.25]) by mx.google.com with ESMTP id gv8si28467842wib.98.2014.06.25.10.12.57 for ; Wed, 25 Jun 2014 10:12:57 -0700 (PDT) Received-SPF: none (google.com: owner-rsgb_lf_group@blacksheep.org does not designate permitted sender hosts) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: owner-rsgb_lf_group@blacksheep.org does not designate permitted sender hosts) smtp.mail=owner-rsgb_lf_group@blacksheep.org; dkim=fail header.i=@comcast.net; dmarc=fail (p=NONE dis=NONE) header.from=comcast.net Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1WzqLn-0001fu-Ce for rs_out_1@blacksheep.org; Wed, 25 Jun 2014 17:47:11 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WzqLn-0001fl-0T for rsgb_lf_group@blacksheep.org; Wed, 25 Jun 2014 17:47:11 +0100 Received: from qmta10.emeryville.ca.mail.comcast.net ([76.96.30.17]) by relay1.thorcom.net with esmtp (Exim 4.82) (envelope-from ) id 1WzqLk-0008DW-UI for rsgb_lf_group@blacksheep.org; Wed, 25 Jun 2014 17:47:09 +0100 Received: from omta13.emeryville.ca.mail.comcast.net ([76.96.30.52]) by qmta10.emeryville.ca.mail.comcast.net with comcast id JgRW1o00517UAYkAAgn67H; Wed, 25 Jun 2014 16:47:06 +0000 Received: from resmail-po-316v.sys.comcast.net ([162.150.177.71]) by omta13.emeryville.ca.mail.comcast.net with comcast id Jgn51o00o1Yocsq8Zgn5MN; Wed, 25 Jun 2014 16:47:06 +0000 X-DKIM-Result: Domain=comcast.net Result=Signature OK Date: Wed, 25 Jun 2014 16:47:05 +0000 (UTC) From: mbdittmar@comcast.net To: rsgb_lf_group@blacksheep.org Cc: "Pouliot, Tom" Message-ID: <751419392.10617770.1403714825805.JavaMail.root@comcast.net> In-Reply-To: References: <53A97738.2070501@gmail.com> <8D15DE5531A8822-27BC-8EBC@webmail-m293.sysops.aol.com> <1799375869.9754147.1403629934148.JavaMail.root@comcast.net> MIME-Version: 1.0 X-Originating-IP: [::ffff:107.1.64.82] X-Mailer: Zimbra 8.0.3_GA_5664 (ZimbraWebClient - FF30 (Win)/8.0.3_GA_5664) Thread-Topic: VLF in Canada - earth loop Thread-Index: /4ZfGzevf+2TeyKhX3JyJ1cwdWQ2BQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20140121; t=1403714826; bh=vVUKB3oahOZkbFuEatSHbhZzi4rGjAbYpGVpKtB2nxE=; h=Received:Received:Date:From:To:Message-ID:Subject:MIME-Version: Content-Type; b=Nh206fdNbDFy4cnTwF5BNNbdGZztag4JHAaMKiEAnMaLXBg3jiDXINHKkMbCXmxIN rUAzFmtn2SD0SAy9yGjs7x9GcWkEDVHsOcIf0LYeUYKZL9fdh4rRIRcf4+xhK9YHrW RU1vsJUbsr4mo1b1bzOFAuprvamqZmMeXe5Fr/1jeiU3y+4uIge7bJD6ebJSKjJAsK 8m38OODd78ot7MH93G08dRSiK9cW3ltUpsQ55hIw97lsGexiwToFmIAh2OYQw/wNLu G8srHDqv/6vG9cLzUFzsHjT8AAev68C992QR7L4bcLSX0R/kTXZF9xMwZWr5dQoZqV bejIzXXHAtMIw== X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hi - I've been following the discussion on 9 khz transmit antennas with some interest, as a friend of mine, Tom, KD0VBR, has done some preliminary experimentation in this area ( using large loading coils w/ vertical ). Tom asked me to post a query regarding some antenna ideas he has, and it would be great to hear the group's thoughts on them and whether they might work or not. 73, Mark AB0CW [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [76.96.30.17 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (mbdittmar[at]comcast.net) -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 8556389a5ea14fbbf9b9d801ab70c592 Subject: LF: VLF in Canada - earth loop Content-Type: multipart/alternative; boundary="----=_Part_10617769_1301925525.1403714825804" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.1 required=5.0 tests=HTML_30_40,HTML_MESSAGE, NO_REAL_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 ------=_Part_10617769_1301925525.1403714825804 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Hi - I've been following the discussion on 9 khz transmit antennas with some interest, as a friend of mine, Tom, KD0VBR, has done some preliminary experimentation in this area ( using large loading coils w/ vertical ). Tom asked me to post a query regarding some antenna ideas he has, and it would be great to hear the group's thoughts on them and whether they might work or not. 73, Mark AB0CW Below are his questions: ----- Original Message ----- From: "Pouliot, Tom" To: "Dittmar, Mark" Sent: Wednesday, June 25, 2014 8:51:48 AM Subject: RE: LF: VLF in Canada - earth loop Hi Mark, That would be great if you could post some questions about transmitting loops for VLF. Thinking about a square loop 200' per side 10' off the ground #8 wire with 200 watts into the antenna. How far away could one expect to be able to detect a CW signal ? ( not QRSS) Another possibility would be a triangular loop 200' per side with a 50' high apex. Tom ------=_Part_10617769_1301925525.1403714825804 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Hi -

I've been following th= e discussion on 9 khz transmit antennas with some interest, as a friend of = mine, Tom, KD0VBR, has done some preliminary experimentation in this area (= using large loading coils w/ vertical ).  Tom asked me to post a quer= y regarding some antenna ideas he has, and it would be great to hear the gr= oup's thoughts on them and whether they might work or not.  73, Mark A= B0CW

Below are his questions:

Fr= om: "Pouliot, Tom" <tomandmarti@hotmail.com>
To: "Dittm= ar, Mark" <mbdittmar@comcast.net>
Sent: Wednesday, June 25,= 2014 8:51:48 AM
Subject: RE: LF: VLF in Canada - earth loop
<= div>
Hi Mark,
That would be great if you could= post some questions about transmitting loops for VLF.
Thinkin= g about a square loop 200' per side 10' off the ground  #8 wire with 2= 00 watts into the antenna. How far away could one expect to be able to dete= ct a CW signal ? ( not QRSS)
Another possibility would be a tr= iangular loop 200' per side with a 50' high apex.

<= /div>
Tom

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