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|    Message 30,459 of 31,131    |
|    Jeff to All    |
|    Re: Columbia zapped by HAARP Elf-wave we    |
|    13 Sep 08 10:04:12    |
      XPost: sci.military.naval, sci.space.shuttle, alt.conspiracy       XPost: sci.astro.amateur       From: jeff@local.host              > The word was transmitt. The transmission is from the power source to       > the atmosphere. Nothing was said about beam density, it was       > transmitter output. Before the antenna, not after. No array is going       > to manufacture power from nothing. A watt is a unit of power, not       > intensity.ERP is pure fiction when discussing transmitter power which       > is always less than the ammount of electricity used. An antenna will       > not radiate more power than leaves the transmitter.                     You seem to forget that Watts can also be used for the power received at the       other end of the link.       At the receiving end it is impossible to tell whether the transmitting       station is using low power into a high gain directional antenna or high       power into an omni directional one. That is why the concept of ERP is used.              Nothing is manufactured, but the number of Watts received goes up when there       is antenna gain; (in the direction where the gain is stated).              If the concept of ERP is so wrong then why does everyone in the world use it       for calculating link budgets?              Also the Watt is used as a measure of power density, well at least as Watts       per square metre.              Regards       Jeff              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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