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LF: Re: EZNEC

To: [email protected]
Subject: LF: Re: EZNEC
From: "Peter Dodd" <[email protected]>
Date: Fri, 17 Sep 1999 00:00:24 +0100
Reply-to: [email protected]
Sender: <[email protected]>

EZNEC modelling software is capable of modelling the ground influence on antenna feedpoint Impedance and conductor conductivity. By comparing a model with zero conductor resistance and perfect ground with a real world model it can estimate efficiency. From this actual radiated power from the antenna can be determined and was used in the first round of discussions on 'ERP' (about 16 months ago). The results correlated well with measured signal strengths.
see page 6.9 of 'The LF Experimenter's Source Book' on Computer
Modelling of LF Antennas
The best efficiency I was able to get from my antenna was about 400mW
radiated (erp?) from a transmitter power of 300W, about 0.13% efficient.

Regards, Peter, G3LDO

<[email protected]>













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