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 - http://www.qsl.net/ik2pii
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