Received-SPF: neutral (google.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org)
From: "Dave Sergeant" <dave@davesergeant.com>
To: rsgb_lf_group@blacksheep.org
Date: Tue, 07 Aug 2007 06:47:12 +0100
MIME-Version: 1.0
Message-ID: <46B81570.8555.167573@dave.davesergeant.com>
In-reply-to: <46B7A497.1000304@ukonline.co.uk>
References: <006901c7cfd4$8705a920$74c8e150@o>, <001601c7d018$81122130$1265e150@o>, <46B7A497.1000304@ukonline.co.uk>
Content-description: Mail message body
Subject: Re: LF: Antenna testing
Content-type: text/plain; charset=US-ASCII
Content-transfer-encoding: 7BIT
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
Status: O

On 6 Aug 2007 at 23:45, Peter Dodd wrote:

> The Array Solutions AIM4170 Antenna Analyzer, reviewed in Radcom July
> 07 and further described in 'Antennas' Radcom August 07, is a splendid
> tool for analyzing and setting up the resonating and matching of LF
> antennas. 

An extensive review also appears in August QST. Nice box, but at $499 
a lot of money even at the current exchange rates unless you have 
another application than the MF bands.

Rather less convenient but far cheaper is Peter's 3M bridge. I 
adapted this and improved its accuracy and found it a perfectly 
adequate method of matching my antenna. I have a detailed description 
on my website 500kHz pages.

But it is probably academic now. With yet another station giving up 
the band last night because of a drop in activity and other reasons I 
feel things have past their peak. (G3XAQ, G3XIZ, G3VTT and possibly 
others have now gone QRT). Unless new stations come on the band for 
proper QSOs I shall do likewise and not waste my time (which is a 
pity as I am giving a talk about the band at my local club on 
Wednesday...).

73 Dave G3YMC

http://www.davesergeant.com