To: | [email protected] |
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Subject: | LF: More on Rr |
From: | "Mike Dennison" <[email protected]> |
Date: | Thu, 24 Jun 1999 15:19:22 +0100 |
Organization: | Radio Society of Great Britain |
Reply-to: | [email protected] |
Sender: | <[email protected]> |
Further to my note on Radiation Resistance formulas, the highly
respected 160m expert ON4UN uses 1450 instead of "160 (or 60)
multiplied by pi squared" in his excellent book Low Band DXing.
This figure is lower than 160 x pi sq (1580) but nowhere near as low
as 60 x pi sq (592). I assume that he must have done some
practical measurements which gave him a better figure than that
calculated in the 1920s.
My first reaction is that (shock, horror) Terman and many others are wrong and the Admiralty was almost right. And my ERP is definitely (probably, perhaps) 44mW. Mike |
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