Message-ID: <3AD8BD87.83C1B5ED@virgin.net>
Date: Sat, 14 Apr 2001 22:13:44 +0100
From: "Stewart Bryant" <stewart.bryant@virgin.net>
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To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: Re: 9 - 520 kHz Active Antenna
References: <004001c0c505$b441e6a0$712cfd3e@compaq> <000901c0c519$40269ae0$8c4a883e@robing>
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The design of the elements is interesting though. I wonder if
the curved elements - which you notice do not touch the
mast - are a synthetic (light weight - low windage) sphere with
similar capacitance, or whether the capacitance to the mast lower down
reduces the effectiveness? I think I would have put it the other way up.

Stewart G3YSX

"Robin T. Greenwood" wrote:

> Looks  expensive to me Tracy.  The Decca design is fine for 136. I have done
> a PCB layout for it. If you want one, I will make it for you since  I recall
> I owe you a favour....
> Robin
> ----- Original Message -----
> From: "Tracey Gardner" <tracey.gardner@ntlworld.com>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Saturday, April 14, 2001 6:09 PM
> Subject: LF: 9 - 520 kHz Active Antenna
>
> >
> > RF Systems have just introduced a new high performance active antenna
> > covering 9 - 520 kHz the LFA520 Longwave Active Antenna
> >
> > http://www.universal-radio.com/catalog/lwant/3060.html
> >
> > Universal Radio in the States don't quote a price for this yet but the
> > Swiss
> > company Shoc shows the price as: CHF 404, (EURO 264 or US$ 248)
> >
> > Regards
> >
> > Tracey
> >
> >
> >