Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dg05.r1000.mx.aol.com (Internet Inbound) with ESMTP id CCCE23800008E; Sun, 14 Aug 2011 13:18:00 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QseIz-0008O6-5o for rs_out_1@blacksheep.org; Sun, 14 Aug 2011 18:16:57 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QseIy-0008Nx-Jg for rsgb_lf_group@blacksheep.org; Sun, 14 Aug 2011 18:16:56 +0100 Received: from nm14-vm0.bullet.mail.ne1.yahoo.com ([98.138.91.52]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1QseIx-0008Ai-0m for rsgb_lf_group@blacksheep.org; Sun, 14 Aug 2011 18:16:56 +0100 Received: from [98.138.90.56] by nm14.bullet.mail.ne1.yahoo.com with NNFMP; 14 Aug 2011 17:16:47 -0000 Received: from [98.138.89.166] by tm9.bullet.mail.ne1.yahoo.com with NNFMP; 14 Aug 2011 17:16:47 -0000 Received: from [127.0.0.1] by omp1022.mail.ne1.yahoo.com with NNFMP; 14 Aug 2011 17:16:47 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 803842.94934.bm@omp1022.mail.ne1.yahoo.com Received: (qmail 57424 invoked by uid 60001); 14 Aug 2011 17:16:47 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1313342207; bh=uCpXgUfX9ubZlJEv02cDpe8efd7h1aOAfKzX8tp+GHo=; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=Jb4N9tFEGHAZ4st1i61LpONWRBFs0/zeLl00j2D+OdPVENxtPSFddd1aEB5JjNfZMiDSYu8y5NOTNIfEzadvlxhZdPz5u53sHZOiztoG9ekjic6N2E7JnV11BK4gNKbd8y1a05Az+6+R8hXVqif0NVbEdh9ZMH59eMjujW36H6A= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=hdqw+CzA5yOm+RAQ5NHmt/27CMjCS7q86dwlCDLKoDD3TKAsA2vdBWP7GjLpJo63eExwM51NCfFJG8LHcjTwbqI1A2eu6ivQRBfu4DtuNjNSYyJcMc1+elgQZrFVRrP3tdcUHr61ILy0emMCM1QoHrGv3qGFhMUzGcB4Ejs/Wlc=; X-YMail-OSG: geoQr6EVM1kdXpgIth6K01vfXJTwurJlpnuhBMt1Dt5nL3r sXqJpLaJ9aI4.SpUZ78GFUu9FQ2AanYuXwW5iBK5qTXMNMpsedA4ms2055Eg cowo5Bj.lnH_IbUaLiYsJBmQy4nk2kkC3Ooy9zhZd33qlHEWaKnnGJ4vC3JO ef64KIsJTVj75uYAc86foBpy6dKgF63WyQoxdgG1Tm7_YH6Ek1SKN08P0XSK Jq_O3uXmJSfnbigStGIJzRdldEQdA.AYGQAcpWKSDQ9cjDhbzKxGb.GPxbL. wF_sqx9lbwYgZxM1ccc_hBm_cJF48IyDcMUXfKwwutC8Xn9UngIj4u4JUCvW u7sgCdaBJhU9_pitER5QCGuA6BJjvpz5GOUotl25f6Wz4g9whX9ppZjKyu3o N78fmdMxXO1M62SEe0cGst0YxZiuwUlFuV.ZvYOVfhiw- Received: from [87.7.201.15] by web111901.mail.gq1.yahoo.com via HTTP; Sun, 14 Aug 2011 10:16:46 PDT X-Mailer: YahooMailWebService/0.8.113.313619 References: <68BE37BD69E54DEE89CEBA8E30E9B94E@PcMinto> <4E47FFE9.10100@iup.uni-heidelberg.de> Message-ID: <1313342206.32812.YahooMailNeo@web111901.mail.gq1.yahoo.com> Date: Sun, 14 Aug 2011 10:16:46 -0700 (PDT) From: Daniele Tincani To: "rsgb_lf_group@blacksheep.org" In-Reply-To: <4E47FFE9.10100@iup.uni-heidelberg.de> MIME-Version: 1.0 DomainKey-Status: good (testing) X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,HTML_TINY_FONT=1.425 Subject: Re: LF: Re: 137 grabbers Content-Type: multipart/alternative; boundary="0-1025713551-1313342206=:32812" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: ** X-Spam-Status: No, hits=2.9 required=5.0 tests=FORGED_YAHOO_RCVD,HTML_40_50, HTML_MESSAGE,TO_ADDRESS_EQ_REAL,WEIRD_PORT 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-SCOLL-SCORE: 0:2:443991616:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d257.1 ; domain : yahoo.com DKIM : fail x-aol-sid: 3039ac1d410d4e4803483b45 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --0-1025713551-1313342206=:32812 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable If I'm not worng,=C2=A0it is the well-known M0AYF design.=0ARegards=0ADanie= le=0A=0AFrom: Stefan Sch=C3=A4fer = =0ATo: rsgb_lf_group@blacksheep.org=0ASent: Sunday, August 14, 2011 7:03 PM= =0ASubject: Re: LF: Re: 137 grabbers=0A=0A=0A This looks like a very good d= esign. Fascinating easy!! Is it completely=0Agrown in your head or have you= seen it somewhere in the web?=0AWhat is the gain, about? I know the BC337 = as a low noise NPN transistor.=0AYour loop is 2m diameter? How many dBs is = the background noise abovethe=0Asoundcard noise?=0A=0AAnother question: Why= are the T37-43 (the 43 types in general)=0Apreferred to the 77 types? The = 77 types have a higher AL value and=0Ashould come out with less turns. I tr= ied to wind a band pass coil with=0Abut of the types (T50-43 and T50-77) an= d achieved about the same Q. Is=0Ait just a question of an available distri= butor?=0A=0AAnd what is your job? Do you have to design electrical circuits= ? ;-)=0A=0A73, Stefan/DK7FC=0A=0A=0A=0A=0AAm 14.08.2011 18:07, schrieb Mint= o Witteveen: =0A =0A>Loop antenna: http://www.pa3bca.nl/index.php?option=3D= com_content&view=3Darticle&id=3D10&Itemid=3D14 =0A>From: Minto Witteveen = =0A>Sent: Sunday, August 14, 2011 18:03 =0A>To: rsgb_lf_group@blacksheep.or= g =0A>Subject: Re: LF: 137 grabbers =0A> Mal, LF, =0A>=0A>I am now using= a single-turn loop in the backyard (hight abt 2=0Ameters) instead of the m= iniwhip. =0A>One of these days I will test again with the miniwhip. First i= mpression=0A(testing the noise against DCF39) was that they dont differ ver= y much. =0A>=0A>73=E2=80=99s Minto pa3bca (grabber at http://pa3bca.pa3bca.= nl:8181) =0A>=0A>---------------------------------------------------------= -----------------=0A>Ceterum censeo Carthaginem delendam esse=0A> =0A>=0A>F= rom: mal=0Ahamilton =0A>Sent: Sunday, August 14, 2011 17:51 =0A>To: rsgb = =0A>Subject: LF: 137 grabbers =0A> LF =0A>My signal seems consistant on t= he PA3PCA=0Agrabber but varies a lot on the DK7FC grabber, sometimes strong= er on=0Athis grabber and others like now barely visible. Could it be the ty= pe=0Aof antenna in use ie one is more prone to noise es qsb than the other?= =0A>de =0A>mal/g3kev --0-1025713551-1313342206=:32812 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
If I'm not worng,&nbs= p;it is the well-known M0AYF design.
Regards<= /div>
Daniele

From: Stefan Sch=C3=A4fer <Stefan.Sch= aefer@iup.uni-heidelberg.de>
To= : rsgb_lf_group@blacksheep.org
Sent: Sunday, August 14, 2011 7:03 PM
Subject: Re: LF: Re: 137 grabbers

=0A=0A=0A =0A=0A =0AThis looks like a very good design. Fascinating eas= y!! Is it completely=0Agrown in your head or have you seen it somewhere in = the web?
=0AWhat is the gain, about? I know the BC337 as a low noise NPN= transistor.
=0AYour loop is 2m diameter? How many dBs is the background= noise abovethe=0Asoundcard noise?
=0A
=0AAnother question: Why are t= he T37-43 (the 43 types in general)=0Apreferred to the 77 types? The 77 typ= es have a higher AL value and=0Ashould come out with less turns. I tried to= wind a band pass coil with=0Abut of the types (T50-43 and T50-77) and achi= eved about the same Q. Is=0Ait just a question of an available distributor?=
=0A
=0AAnd what is your job? Do you have to design electrical circui= ts? ;-)
=0A
=0A73, Stefan/DK7FC
=0A
=0A
=0A
=0A
=0AAm = 14.08.2011 18:07, schrieb Minto Witteveen:=0A
=0A = =0A =0A =0A
=0A
=0A
=0A =0A =0A
=0A
=0A
=0A =0A
= Sent: Sunday, August 14, 2011 18:03
=0A =0A
Subje= ct: Re: LF: 137 grabbers
=0A
=0A
=0A
 =0A
=0A
=0A
=0A
Mal, LF,=0A
 
=0A
I am now using a single-turn loop in th= e backyard (hight abt 2=0Ameters) instead of the miniwhip.
=0AOne of th= ese days I will test again with the miniwhip. First impression=0A(testing t= he noise against DCF39) was that they dont differ very much.
=0A  
=0A
73=E2=80=99s Minto pa3bca (grabber at http://pa3bc= a.pa3bca.nl:8181)
=0A
 
=0A
--------------------= ------------------------------------------------------
=0ACeterum censeo= Carthaginem delendam esse
=0A
=0A
=0A
=0A=
 
=0A
=0A = =0A
Sent: Sunday, A= ugust 14, 2011 17:51
=0A
To: rsgb=
=0A
Subject: LF: 137 grabbers
=0A
=0A =0A
 
=0A
=0A
=0A
LF
=0A
My signal seems consista= nt on the PA3PCA=0Agrabber but varies a lot on the DK7FC grabber, sometimes= stronger on=0Athis grabber and others like now barely visible. Could it be= the type=0Aof antenna in use ie one is more prone to noise es qsb than the= other?
=0A
de
=0A mal/g3kev
=0A
=0A
=0A =0A
=0A
=0A
=0A
=0A =0A=0A


--0-1025713551-1313342206=:32812--