Return-Path: Received: (qmail 27203 invoked from network); 4 Jun 2001 21:18:46 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 4 Jun 2001 21:18:46 -0000 Received: (qmail 4450 invoked from network); 4 Jun 2001 21:18:19 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 4 Jun 2001 21:18:19 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 1571gO-0001l1-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 04 Jun 2001 22:14:40 +0100 Received: from imo-m09.mx.aol.com ([64.12.136.164]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 1571gN-0001kw-00 for rsgb_lf_group@blacksheep.org; Mon, 04 Jun 2001 22:14:39 +0100 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from WarmSpgs@aol.com by imo-m09.mx.aol.com (mail_out_v30.22.) id l.ee.16670eeb (25308) for ; Mon, 4 Jun 2001 17:13:27 -0400 (EDT) From: WarmSpgs@aol.com Message-ID: Date: Mon, 4 Jun 2001 17:13:27 EDT Subject: Re: LF: Re: "Ground" losses To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 8bit X-Mailer: AOL 4.0 for Windows 95 sub 120 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: In a message dated 6/4/01 4:26:52 PM Eastern Daylight Time, paulc@snet.net writes: << I have a location on my property where I could run a flat top antenna of perhaps 70 to 80 feet high with a top hat made of parallel wires at least 200 feet long. I have a tower on my property that is 130' high and could attache to that with the proper insulator if I did not mind the tophat sloping from 130' to around 80 feet. Trees would be about 75 feet away in any direction ... Your thought? >> Seeing that we presently have no legal provision stateside for transmitting into antennas of those dimensions, I have to assume you are speaking of receiving. Ground system losses are less of a factor for receiving, depending on the type of input your receiver has or what sort of antenna tuner you are using with it. Proximity to trees is not ideal even for receiving at LF, but 75 feet or so should be acceptable. Receiving loops would be still better, though. John KD4IDY