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Re: LF: keep cool

To: [email protected]
Subject: Re: LF: keep cool
From: "Rik Strobbe" <[email protected]>
Date: Tue, 05 Dec 2000 17:01:14
In-reply-to: <000201c05d07$98dc42e0$7417883e@default>
Reply-to: [email protected]
Sender: <[email protected]>
Hello Mal,

Thanks for your tips to prevent the loadingcoil from overheating, this will
be usefull for those who can get 10A or more into the antenna.

Just one remark :

Dont waste all those hundreds of watts heating up your coil, send it up the
antenna.

Cooling the coil will not get a mA more into the antenna. The power loss in
the coil remains unchanged, it will just warm the water (advantage : tea is
ready after each QRSS QSO) instead of the copper. So cooling is OK to
prevent destruction of the coil but will not give you any more ERP.

PS : maybe if you take into account that copper at 100°C has a higher
resistance than copper at 20°C you might gain a few micro-Watts.


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