Message-ID: <008c01ccca38$51c53600$0401a8c0@xphd97xgq27nyf>
From: "mal hamilton" <g3kevmal@talktalk.net>
To: <rsgb_lf_group@blacksheep.org>
References: <8E8D23D235D70840B6582917DF27898013DCA5FE@temps153538.tms-ltd.com>
Date: Tue, 3 Jan 2012 16:54:11 -0000
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Subject: Re: LF: Antennas
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I wondered what that Beached Aircraft carrier was doing in the middle of
Leicester !!  Pauls TOY

----- Original Message -----
From: "Reeves Paul" <Paul.Reeves@uk.thalesgroup.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: Tuesday, January 03, 2012 4:06 PM
Subject: RE: LF: Antennas


> Don't forget, Mal still uses cats whiskers and coherers - that's why he
> needs large antennas and keeps on asking everyone to use QRO amplifiers
and
> antennas that need 2 acres of ground space because he cannot hear them :-)
> But more seriously, I rather agree with Andy, 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, 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........
>
> Paul   G8GJA
> -----Original Message-----
> From: Dexter McIntyre W4DEX [mailto:dexter.mc@gmail.com]
> Sent: 03 January 2012 15:02
> To: rsgb_lf_group@blacksheep.org
> Subject: Re: LF: Antennas
>
> 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 receive
> signal was needed for the cat whisker detector to work :)
>
> Dex
>
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