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Message-ID: <003801c78b27$80a179c0$0300a8c0@lark>
From: "Alan Melia" <alan.melia@btinternet.com>
To: <rsgb_lf_group@blacksheep.org>
References: <006a01c78a84$87d2be00$0300a8c0@lark>, <000a01c78aac$131ca1c0$0300a8c0@lark> <463592B9.18044.1D0458@dave.davesergeant.com>
Date: Mon, 30 Apr 2007 13:14:44 +0100
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Subject: Re: LF: Re: Re: 500 ERP calculation Spreadsheet
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Hi Dave
 Ia^2*Rloss is power lost not radiated. The Rloss figure is only they for
historical reasons...the "Efficiency" column is the only one that uses it.
You will just need more power to drive the calculated current through Rrad +
Rloss.
Thanks for the check on the down load....you both had me worried, until I
realised what I had done.

Cheers de Alan G3NYK

----- Original Message -----
From: Dave Sergeant <dave@davesergeant.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: 30 April 2007 06:54
Subject: Re: LF: Re: Re: 500 ERP calculation Spreadsheet


> On 29 Apr 2007 at 23:16, Alan Melia wrote:
>
> > Hi Gary and Dave, if and when you have time could you please try again
> > now. I resaved them and the file is smaller. I guess it may be my
> > usual problem with the scroll mouse, having set the dropdown window, I
> > roll the scrol-wheell and it changes the setting. I keep forgetting to
> > left click outside the drop-down, before using the scroll-wheel.
> >
> > They load onto my ver. 7 Excel now (Win 95 version .....meany !!)
> >
> > I think they must have been text or Works files.
> >
> > Thanks, I hope that the last glitch tonight !
> >
> > Cheers de Alan G3NYK
> >
> >
> >
> That version works a lot better....
>
> Why if I change the RLoss value does it not change the 'Ae current
> for -10dBw' values, or am I missing something?
>
> 73 Dave G3YMC
>
>
>
> http://www.davesergeant.com
>
>