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Re: LF: Finbar's Compact 500kHz Vertical

To: [email protected]
Subject: Re: LF: Finbar's Compact 500kHz Vertical
From: Claudio Pozzi <[email protected]>
Date: Sun, 15 Jun 2008 17:08:15 +0200
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]>
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On Saturday 14 June 2008 17:56, [email protected] wrote:

> According to my experiments on untuned (and broadband) receiving aerials
> for MF SKYWAVE RECEPTION in eastern Bavaria I have got the impression
> that a (capacitive) MF aerial should be as high as possible (not
> regarding loop aerials, they may be located close to the ground, for
> them the loop area only counts).

If your antenna is an active one, like mini-whip, I agree.
You can find some info about "height gain" in this paper, page 7:
SCHWARZBECK MESS - ELEKTRONIK, "Calibration of Vertical Monopole Antennas 
(9kHz - 30 MHz)"
I've lost the WEB link but you can find the paper using Google.

This paper also have some useful  hints about short and active antennas:
Christof Rohner, "Antenna Basics", Rohde&Schwarz, 1999
You can find the paper into the Rohde&Schwarz WEB site.

73 de Claudio, ik2pii

Claudio Pozzi  -  Happy Linux User  -

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