Return-Path: Received: (qmail 68968 invoked from network); 4 Apr 2004 19:37:24 -0000 Received: from unknown (HELO ptb-mxscan02.plus.net) (212.159.14.236) by ptb-mailstore01.plus.net with SMTP; 4 Apr 2004 19:37:24 -0000 Received: (qmail 46273 invoked from network); 4 Apr 2004 19:47:57 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Spam-detection-level: 11 Received: from ptb-mxcore02.plus.net (212.159.14.216) by ptb-mxscan02.plus.net with SMTP; 4 Apr 2004 19:47:56 -0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (Exim) id 1BADb2-000Bur-0D for dave@picks.force9.co.uk; Sun, 04 Apr 2004 19:47:56 +0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1BADaJ-00062H-6V for rs_out_1@blacksheep.org; Sun, 04 Apr 2004 20:47:11 +0100 Received: from [213.232.95.59] (helo=relay.salmark.net) by post.thorcom.com with esmtp (Exim 4.14) id 1BADaI-000628-Lk for rsgb_lf_group@blacksheep.org; Sun, 04 Apr 2004 20:47:10 +0100 Received: from rhenium.btinternet.com ([194.73.73.93]) by relay.salmark.net with esmtp (Exim 4.24) id 1BADaF-0004s4-J9 for rsgb_lf_group@blacksheep.org; Sun, 04 Apr 2004 20:47:07 +0100 Received: from [213.122.121.15] (helo=Main) by rhenium.btinternet.com with smtp (Exim 3.22 #25) id 1BADaE-0003rk-00 for rsgb_lf_group@blacksheep.org; Sun, 04 Apr 2004 20:47:06 +0100 X-Bad-Message-ID: no DNS (Main) Message-ID: <002e01c41a7d$a311bf60$6507a8c0@Main> From: "Alan Melia" To: rsgb_lf_group@blacksheep.org References: <000f01c41907$300adbe0$0500a8c0@charter.net> <4920234613.20040403155133@dx.ru> <1BAC1j-0c5Y120@fwd08.sul.t-online.com> Date: Sun, 4 Apr 2004 20:32:32 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4522.1200 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 X-Spam-Score: 0.1 (/) X-Spam-Report: RCVD_IN_SORBS=0.1 Subject: LF: Re: 700pF Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.0 required=5.0 tests=none 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-PN-SPAMFiltered: yes X-Spam-Rating: 2 Hi Uwe, I would not expect a non-resonant pole at 8m from the aerial vertical section to make a lot of difference or produce much loss. If it were resonant at 136khz it would be different. Our measurement at EI0CF were similar and it was only necessary to detune one aerial to remove the loss. 700pF seems a lot for a 17m pole ....I would have expected more like 85-90pF, but it depends on how you measured it. Lossy environment like trees and wet brickwork is more of a problem. Are you just using a vertical without any top capacity loading ?? Cheers de Alan G3NYK alan.melia@btinternet.com ----- Original Message ----- From: "jannsen" <0482183881-0001@t-online.de> To: Sent: 04 April 2004 19:07 Subject: LF: 700pF > Hi, > > I measured the FS of my 600W tx equipment with 3.2mV/m in a distance of 1.7km > some month ago. > > there is a 17m alu pole (SM17, Bundeswehr surplus) located 8m off the tx aerial > (16m vertical with elevated coil). > > last week I insolated the alu pole and its guy wires completly against earth by > lifting it up as it stands (with supreme effort by my assisting neighbours). > > I had hopes the effort would have some positive results conc the FS: > I measure 700pF form pole against the earth radial system but the FS did not > change, it stubborn shows 3.2mV/m. > > regards from frustrated > Uwe/dj8wx >