Return-Path: Received: from mtain-da04.r1000.mx.aol.com (mtain-da04.r1000.mx.aol.com [172.29.64.76]) by air-ma08.mail.aol.com (v126.13) with ESMTP id MAILINMA083-b5324b2d2048dd; Sat, 19 Dec 2009 13:49:44 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-da04.r1000.mx.aol.com (Internet Inbound) with ESMTP id D7730380000B4; Sat, 19 Dec 2009 13:49:43 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NM4I5-00035R-M7 for rs_out_1@blacksheep.org; Sat, 19 Dec 2009 18:44:33 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NM4I5-00035I-0W for rsgb_lf_group@blacksheep.org; Sat, 19 Dec 2009 18:44:33 +0000 Received: from out1.ip07ir2.opaltelecom.net ([62.24.128.243]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NM4M8-000622-7m for rsgb_lf_group@blacksheep.org; Sat, 19 Dec 2009 18:48:46 +0000 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AtcEADauLEtOlrSE/2dsb2JhbACOCgbGT4QuBA X-IronPort-AV: E=Sophos;i="4.47,424,1257120000"; d="scan'208,217";a="363975502" Received: from unknown (HELO xphd97xgq27nyf) ([78.150.180.132]) by out1.ip07ir2.opaltelecom.net with SMTP; 19 Dec 2009 18:48:37 +0000 Message-ID: <001d01ca80db$dbee9680$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: <38A51B74B884D74083D7950AD0DD85E828ACB3@File-Server-HST.hst.e-technik.tu-darmstadt.de> <346854e9698cbf94f4483c66682bb63b.squirrel@webmail.xs4all.nl> <001e01ca80b0$392cb0b0$8d01a8c0@JAYDELL> <002501ca80cc$2df97f90$0301a8c0@your91hoehfy9g> <9afca2640912190916g2eaed7e3o920b6eca5fcfd48b@mail.gmail.com> Date: Sat, 19 Dec 2009 18:48:30 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Re: Re: Noise cancelling by using optic transmission of RX signals Content-Type: multipart/alternative; boundary="----=_NextPart_000_001A_01CA80DB.DB93F360" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE 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-sid: 3039ac1d404c4b2d20476cd2 X-AOL-IP: 193.82.116.20 ------=_NextPart_000_001A_01CA80DB.DB93F360 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I do understand but some persons cannot be told. It depends how it is= configured/installed, height above ground , environment etc=20 G3KEV ----- Original Message -----=20 From: Roger Lapthorn=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Saturday, December 19, 2009 5:16 PM Subject: Re: LF: Re: Re: Noise cancelling by using optic transmissio= n of RX signals Total tosh Mal. You clearly don't understand how E-probe antennas= work.=20 73s and happy Christmas Roger G3XBM 2009/12/19 mal hamilton I said recently that the wire connecting these type of mini antenn= as is in fact the antenna. It was the same with the Partridge Joy stick of yesteryears, the long connecting wire to the small loading coil wa= s doing most of the work. There is no substitute for a real resonant antenna at the working= frequency. G3KEV ----- Original Message ----- From: To: Sent: Saturday, December 19, 2009 1:36 PM Subject: LF: Re: Noise cancelling by using optic transmission of= RX signals > >I think the role of the ground with active whips is often negle= cted - the output of the whip preamp > >is the voltage differential between the whip element and the ci= rcuit ground, so the ground > >connection is just as much part of the antenna as the whip elem= ent itself is. > > That's an important point that is often overlooked or ignored.= A mini whip mounted up at 5 meters is > a 5 meter antenna. You can easily prove this by mounting it at= ground zero on top of a ground > screen. Been there, done that. > > Jay W1VD WD2XNS WE2XGR > > --=20 ------------------------------------------------------------- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk G3XBM GQRP 1678 ISWL G11088 ------=_NextPart_000_001A_01CA80DB.DB93F360 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I do understand but some persons cann= ot be told. It=20 depends how it is configured/installed, height above ground , environm= ent etc=20
G3KEV
 
----- Original Message -----
Sent: Saturday, December 19,= 2009 5:16=20 PM
Subject: Re: LF: Re: Re: Nois= e cancelling=20 by using optic transmission of RX signals

Total tosh Mal.  You clearly don't= =20 understand how E-probe antennas work.

73s and happy=20 Christmas

Roger G3XBM




2009/12/19 mal hamilton <= ;g3kevmal@talktalk.net>
I=20 said recently that the wire connecting these type of mini antennas= is=20 in
fact the antenna. It was the same with the Partridge Joy sti= ck=20 of
yesteryears, the long connecting wire to the small loading= coil was=20 doing
most of the work.
There is no substitute for a real re= sonant=20 antenna at the working frequency.
G3KEV


----- Origin= al Message=20 -----
From: <= jrusgrove@comcast.net>
To:=20 <rsgb_lf_= group@blacksheep.org>
Sent:=20 Saturday, December 19, 2009 1:36 PM
Subject: LF: Re: Noise canc= elling by=20 using optic transmission of RX signals


> >I think= the role=20 of the ground with active whips is often neglected - the
output= of the=20 whip preamp
> >is the voltage differential between the wh= ip element=20 and the circuit
ground, so the ground
> >connection is= just as=20 much part of the antenna as the whip element itself
is.
>=
>=20 That's an important point that is often overlooked or ignored. A= mini=20 whip
mounted up at 5 meters is
> a 5 meter antenna. You= can easily=20 prove this by mounting it at ground zero
on top of a ground
= >=20 screen. Been there, done that.
>
> Jay W1VD  WD2X= NS=20  WE2XGR
>
>




--=20
-------------------------------------------------------------http://g3xbm-qrp.blogs= pot.com/
http://www.g3xb= m.co.uk
G3XBM  =20  GQRP 1678      ISWL G11088
------=_NextPart_000_001A_01CA80DB.DB93F360--