Message-ID: <009401ccca39$773fac70$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 17:02:24 -0000
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Subject: Re: LF: Antennas
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Paul
Whiskers but no CAT at this QTH.
At least the Antenna discussion is now more civilised and humourous apart
from Jim Boy and his personal insults and not relevant to the topic
discussed.
mal/g3kev

----- 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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