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)
Message-ID: <466ABF56.2090203@telia.com>
Date: Sat, 09 Jun 2007 16:55:18 +0200
From: "Johan H. Bodin" <jh.bodin@telia.com>
User-Agent: Thunderbird 2.0.0.0 (Windows/20070326)
MIME-Version: 1.0
To:  rsgb_lf_group@blacksheep.org
References: <BAY124-F3900F6885CA03CA4608264CF250@phx.gbl> <000901c7aa26$ecfaff60$82147ad5@w4o8m9> <000d01c7aa8c$6d692860$7c0d7ad5@w4o8m9> <466AB1CB.2060907@telia.com>
In-Reply-To: <466AB1CB.2060907@telia.com>
Subject: Re: LF: 136kHz tests - M0BMU ERP
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
Status: O

Ooops,

I wrote:
 > When the topload is raised, and if everything scales
 > nicely, the area of the base of the cone increases with the square of
 > topload height.

I was thinking of a "point source"... A 40 meter wire is of course a
rather "stretched" point so there will be a "tent" instead of a cone :-)

If the topload L >> H then the "Laurencian Area" covered will probably
scale almost linearly with topload height (and length!). What happens
at the ends is just a small portion of the total capacitance when L >> H.

Increasing the "Laurencian Area" beyond a certain point may be a case of
diminishing returns unless the "absolute resistance" of the galvanic
grounding point(s) is very low.

Just a few thoughts...

73
Johan SM6LKM