Message-ID: <560A8403.7070002@posteo.de>
Date: Tue, 29 Sep 2015 14:28:51 +0200
From: DK7FC <selberdenken@posteo.de>
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To: rsgb_lf_group@blacksheep.org
References: <453589076.20150929131349@chriswilson.tv>
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Subject: Re: LF: Active antennas on 136kHz, additional wire needed?
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Hi Chris,

Oh, they sell it! Quite expensive, i find.

I think it depends on where you want to place the antenna later. On the 
top of a house or on the car in an open field it works without an 
additional wire. If you place it in or below or beside a tree or in the 
field shadow of a house, some additional wire could be helpful to rise 
the signal level. But often this does not rise the SNR, just the level. 
I would try it without additional wire first and see if the signal 
levels are high enough. Its better to put it into a QRM-clean and free 
standing environment.

73, Stefan

Am 29.09.2015 14:13, schrieb Chris Wilson:
> 29 September 2015
>
>
> A friend bought me an active RX antenna, a PA0RDT clone, from Ebay:
>
> http://www.ebay.co.uk/itm/111719689171?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
>
> as  a  gift for sorting a car problem. It's built and working, but the
> build  notes  suggest  an  additional wire on the PCB that acts as the
> aerial  may  be  needed. What are people's thoughts on adding say a 12
> inch  wire  poking out the PVC tube that it will be mounted high up outside
> in? Necessary or not? Just use the PCB board antenna? Thanks.
>
>
>
>