Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mb03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 8174A380000A8; Tue, 3 Jan 2012 11:30:42 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Ri7FE-00022N-JQ for rs_out_1@blacksheep.org; Tue, 03 Jan 2012 16:29:48 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Ri7FE-00022E-3e for rsgb_lf_group@blacksheep.org; Tue, 03 Jan 2012 16:29:48 +0000 Received: from blu0-omc1-s34.blu0.hotmail.com ([65.55.116.45]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Ri7FD-0002Ud-7R for rsgb_lf_group@blacksheep.org; Tue, 03 Jan 2012 16:29:48 +0000 Received: from BLU163-W5 ([65.55.116.9]) by blu0-omc1-s34.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Tue, 3 Jan 2012 08:29:40 -0800 Message-ID: X-Originating-IP: [88.104.46.244] From: Gary G4WGT To: Date: Tue, 3 Jan 2012 16:29:39 +0000 Importance: Normal In-Reply-To: <8E8D23D235D70840B6582917DF27898013DCA5FE@temps153538.tms-ltd.com> References: <8E8D23D235D70840B6582917DF27898013DCA5FE@temps153538.tms-ltd.com> MIME-Version: 1.0 X-OriginalArrivalTime: 03 Jan 2012 16:29:40.0205 (UTC) FILETIME=[E42B39D0:01CCCA34] X-Spam-Score: 0.9 (/) X-Spam-Report: autolearn=disabled,HTML_10_20=0.945,HTML_MESSAGE=0.001 Content-Type: multipart/alternative; boundary="_5be44699-efd5-457d-bca1-d9f8f1fdb93e_" Subject: RE: LF: Antennas X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.2 required=5.0 tests=EXCUSE_16,FORGED_HOTMAIL_RCVD, 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-SCOLL-SCORE: 0:2:452731712:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d60174f032d3264cc X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --_5be44699-efd5-457d-bca1-d9f8f1fdb93e_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi All=2C Paul G8GJA wrote...But it would be nice to have the space and low= noise level that Mal seems to have........ Mal doesn't realise how fortunate he is...... 73=2C Gary - G4WGT.> From: P= aul.Reeves@uk.thalesgroup.com > To: rsgb_lf_group@blacksheep.org > Date: Tue=2C 3 Jan 2012 16:06:52 +0000 > Subject: RE: LF: Antennas >=20 > Don't forget=2C Mal still uses cats whiskers and coherers - that's why he > needs large antennas and keeps on asking everyone to use QRO amplifiers a= nd > antennas that need 2 acres of ground space because he cannot hear them :-= ) > But more seriously=2C I rather agree with Andy=2C unless you need fancy > directional processing for the rx side you only need to be external noise > limited - all the naval systems (that I've dealt with...) use active rx > antennas and serious multicouplers. Tx uses as much metalwork as they can > get up there=2C generally whips. Subs also use active antenna probes and = loops > for vlf (rather a critical area you might think....) - rather less > interested in transmitting though:-) > But it would be nice to have the space and low noise level that Mal seems= to > have........ >=20 > Paul G8GJA > -----Original Message----- > From: Dexter McIntyre W4DEX [mailto:dexter.mc@gmail.com]=20 > Sent: 03 January 2012 15:02 > To: rsgb_lf_group@blacksheep.org > Subject: Re: LF: Antennas >=20 > What commercial two way LF stations still exist? All that I know of just > transmit. Way back when there was two way LF traffic a high level receiv= e > signal was needed for the cat whisker detector to work :) >=20 > Dex >=20 > This email=2C including any attachment=2C is a confidential communication > intended solely for the use of the individual or entity to whom it is > addressed. It contains information which is private and may be proprietar= y > or covered by legal professional privilege. If you have received this ema= il > in error=2C please notify the sender upon receipt=2C and immediately dele= te it > from your system. >=20 > Anything contained in this email that is not connected with the businesse= s > of this company is neither endorsed by nor is the liability of this compa= ny. >=20 > Whilst we have taken reasonable precautions to ensure that any attachment= to > this email has been swept for viruses=2C we cannot accept liability for a= ny > damage sustained as a result of software viruses=2C and would advise that= you > carry out your own virus checks before opening any attachment. >=20 >=20 = --_5be44699-efd5-457d-bca1-d9f8f1fdb93e_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi All=2C
 =3B
Paul G8GJA wrote...
But it would be nice to hav= e the space and low noise level that Mal seems to have........

 = =3BMal doesn't =3Brealise how fortunate he is......
 =3B
73= =2C Gary - G4WGT.
>=3B From= : Paul.Reeves@uk.thalesgroup.com
>=3B To: rsgb_lf_group@blacksheep.org=
>=3B Date: Tue=2C 3 Jan 2012 16:06:52 +0000
>=3B Subject: RE: LF= : Antennas
>=3B
>=3B Don't forget=2C Mal still uses cats whisker= s and coherers - that's why he
>=3B needs large antennas and keeps on = asking everyone to use QRO amplifiers and
>=3B antennas that need 2 ac= res of ground space because he cannot hear them :-)
>=3B But more seri= ously=2C I rather agree with Andy=2C unless you need fancy
>=3B direct= ional processing for the rx side you only need to be external noise
>= =3B limited - all the naval systems (that I've dealt with...) use active rx=
>=3B antennas and serious multicouplers. Tx uses as much metalwork as= they can
>=3B get up there=2C generally whips. Subs also use active a= ntenna probes and loops
>=3B for vlf (rather a critical area you might= think....) - rather less
>=3B interested in transmitting though:-)>=3B But it would be nice to have the space and low noise level that Mal= seems to
>=3B have........
>=3B
>=3B Paul G8GJA
>= =3B -----Original Message-----
>=3B From: Dexter McIntyre W4DEX [mailt= o:dexter.mc@gmail.com]
>=3B Sent: 03 January 2012 15:02
>=3B To:= rsgb_lf_group@blacksheep.org
>=3B Subject: Re: LF: Antennas
>=3B=
>=3B What commercial two way LF stations still exist? All that I kn= ow of just
>=3B transmit. Way back when there was two way LF traffic = a high level receive
>=3B signal was needed for the cat whisker detect= or to work :)
>=3B
>=3B Dex
>=3B
>=3B This email=2C i= ncluding any attachment=2C is a confidential communication
>=3B intend= ed solely for the use of the individual or entity to whom it is
>=3B a= ddressed. It contains information which is private and may be proprietary>=3B or covered by legal professional privilege. If you have received t= his email
>=3B in error=2C please notify the sender upon receipt=2C an= d immediately delete it
>=3B from your system.
>=3B
>=3B An= ything contained in this email that is not connected with the businesses>=3B of this company is neither endorsed by nor is the liability of this= company.
>=3B
>=3B Whilst we have taken reasonable precautions = to ensure that any attachment to
>=3B this email has been swept for vi= ruses=2C we cannot accept liability for any
>=3B damage sustained as a= result of software viruses=2C and would advise that you
>=3B carry ou= t your own virus checks before opening any attachment.
>=3B
>=3B=
= --_5be44699-efd5-457d-bca1-d9f8f1fdb93e_--