Ralph, The equation you gave from ARRL was dist=sqrt(2*height)
Sqrt of 2 is 1.41 Sqrt (2 * H) = 1.41 *sqrt(H). Just bring out the sqrt of 2 first, hi. 73, ron, n9ee/r >From: Ralph Mowery <[EMAIL PROTECTED]> >Date: 2007/08/30 Thu PM 05:52:43 CDT >To: Repeater-Builder@yahoogroups.com >Subject: Re: Re: Re: [Repeater-Builder] Re: Repeater Range : Estimate Program >Available > > >--- Ron Wright <[EMAIL PROTECTED]> wrote: > >> Ralph, >> >> I am sure the equation is >> >> Distance (in miles) = Square Root of (2 * height >> >> in feet) >> >> not >> >> Distance (in miles) = Square Root (height in feet). >> >> > >Then my refferance (ARRL Antenna Book 1974 version >page 11) must be wrong. They give it as 1.415 * sqrt >height, not 2 times the heigth. You may be getting >the two times if you have two antennas at the same >height. You have to use the formula two times, one >for each antenna and then add them together for the >total distance. The 1.415 is a multiplier for radio >wave bending around the curve of the earth and may >need to be differant for differant kinds of earth. > >__________________________________________________________ >Building a website is a piece of cake. Yahoo! Small Business gives you all the >tools to get online. >http://smallbusiness.yahoo.com/webhosting > Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
