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Re: LF: E-field probe performance

To: [email protected]
Subject: Re: LF: E-field probe performance
From: ALAN MELIA <[email protected]>
Date: Wed, 28 Mar 2012 17:02:42 +0100 (BST)
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Hi Roger I think this might be difficult..... as I understand the workings of these they are very dependant on their mounting......i.e. the portion of the wavefront they intercept. I suspect dfferent ground and different mounting heights between sites might lead to different sensitivities. Others may be able to suggest a suitable "test" using a known station as a source at a given time in daytime i.e within the groundwave range. We used to use the signal from DCF39 as a test on 136kHz, which is very reliable in the UK and was measured by Dick Rollema PA0SE at  number of locations. I think the Fs was about 1mV/m in the UK maybe slightly less. I seem to remember Dick measured 2mV/m in the Netherlands.

Alan
G3NYK

--- On Wed, 28/3/12, Roger Lapthorn <[email protected]> wrote:

From: Roger Lapthorn <[email protected]>
Subject: LF: E-field probe performance
To: [email protected], [email protected]
Date: Wednesday, 28 March, 2012, 13:43

Several of the VLF grabbers are now using Stefan DK7FC's E-field probe (Tel Aviv, Ipswich, Iceland etc).  I'm wondering if anyone has done a straight comparison against the PA0RDT design and measured which is better in terms of sensitivity and dynamic range?

73s
Roger G3XBM

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