Return-Path: Received: (qmail 28450 invoked from network); 28 Feb 2000 15:43:22 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by bells.core.plus.net.uk with SMTP; 28 Feb 2000 15:43:22 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12PS4l-0006M5-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 28 Feb 2000 15:27:11 +0000 Received: from ds9.sci.fi ([195.74.0.54]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12PS4j-0006M0-00 for rsgb_lf_group@blacksheep.org; Mon, 28 Feb 2000 15:27:09 +0000 Received: from default (DXCV.tdyn.saunalahti.fi [195.197.80.95]) by ds9.sci.fi (8.9.1/8.9.1) with SMTP id RAA24104 for ; Mon, 28 Feb 2000 17:27:04 +0200 (EET) X-Priority: 3 X-MSMail-Priority: Normal Message-ID: <3.0.6.32.20000228172701.008082a0@laatikko.saunalahti.fi> X-Sender: vaiski1@laatikko.saunalahti.fi (Unverified) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.6 (32) Date: Mon, 28 Feb 2000 17:27:01 +0200 To: rsgb_lf_group@blacksheep.org From: =?iso-8859-1?Q?V=E4in=F6_Lehtoranta?= Subject: Re: LF: Field strength revised In-reply-to: <000701bf8166$fae4a900$c22597d4@win95.swipnet.se> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="------------020902040304070906070308" Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: This is a multi-part message in MIME format. --------------020902040304070906070308 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Hejsan Christer, Just curious - how do you calculate your Fs. 0.3 W at 2 km should give 68 dB(uV/m) 0.6 W at 2 km should give 71 dB(uV/m) Both calculating and measuring Fs is difficult. Main point is that you have very good signal!! de Väinö, OH2LX At 22:09 27.2.2000 +0100, you wrote: >Hello All > >Thanks to PA0SE for suggesting the calibration method. >I tried this method this evening and believe I'm somewhat closer to the truth... > >Obviously the measuring loop with the connection wiring was resonant far lower in frequency than expected. This made the figures a bit optimistic. > >Now I have a 6,3 dB difference between calculated (2,4 W) and measured radiated power (0,65 W). > >More details on my home page >http://home5.swipnet.se/~w-54761/fs.htm > >73 >Christer >SM6PXJ --------------020902040304070906070308 Content-Type: text/plain; charset=windows-1252; name="Gin.out" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="Gin.out" GROUND WAVE FIELD-STRENGTH, MILLINGTON METHOD GW LF Ham 136. kHz FIELD-STRENGTH DB ABOVE 1 MICROVOLT/METER EPS =10.0 SIG = .5 mS/m FREQ = 136. kHz POWER = .30 W DIST. (KM) F-S (dBuV/m) 1.0 74.1 2.0 68.0 3.0 64.3 4.0 61.7 5.0 59.7 6.0 58.0 7.0 56.5 8.0 55.3 9.0 54.2 10.0 53.2 30.0 41.7 50.0 35.0 70.0 30.4 90.0 26.6 END OF CIRCUIT LOPPU --------------020902040304070906070308 Content-Type: text/plain; charset=windows-1252; name="ATT06296.txt" Content-Transfer-Encoding: base64 Content-Disposition: inline; filename="ATT06296.txt" DQotLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tDQpWLksuTGVodG9yYW50YSwgT0gyTFgsIFBPQm94IDUwLCBGSU4tMDU0MDEgSm9r ZWxhLCBGaW5sYW5kDQotLS0tLS0gVGVsOiArMzU4LTktNDE3Mzk2NSAtLS0tIEZheDogKzM1 OC05LTQxNzM5NjEgLS0tLS0tDQpFLW1haWw6IHZhaXNraUBkbGMuZmkgLSBhbGlhczogb2gy bHhAZGxjLmZpICYgb2gybHhAc3JhbC5maQ== --------------020902040304070906070308--