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LF: Re: Re. 73KHz tests

To: [email protected]
Subject: LF: Re: Re. 73KHz tests
From: "g3ldo" <[email protected]>
Date: Mon, 4 Jun 2001 11:35:49 +0100
References: <[email protected]>
Reply-to: [email protected]
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Laurie said:

Thanks Ko for the report.glad you saw us.
Yes, Ko's report was very useful. From his field strength readings we should
be able to make some good estimates of relative transmitted power. Laurie
and I only live a few km apart and we are both located close to the sea.

Thanks Peter for the comments on the B.09 K Amp.I think I must be getting
600/700 W since my Ant current is 3.5A (ground loss probably twice that on
136 >say 70/80 ohms). EZNEC gives a Rres of 0.2ohms for my antenna so
Rad.pwr is >about 250mW.But measurment on 136 indicate only half radiated so
I recon >125mW ERP at best.

I have calculated my Rres on EZNEC as .01 ohms and with a antenna of 1.5A
this gives me a radiated power of 23.2mW. Would the 8dB difference observed
by Ko account for this?

Regards,
Peter, G3LDO

e-mail <[email protected]>

Web <http://web.ukonline.co.uk/g3ldo>









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