Not flat... I thought it was 10 miles flat?
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Jun 10, 2016 5:57 PM, "Bill Prince" <[email protected]> wrote: > Sitting on my front porch. I can see over 40 miles to the horizon. > > > bp > <part15sbs{at}gmail{dot}com> > > > On 6/10/2016 2:36 PM, Ken Hohhof wrote: > > But from eye level, the horizon is only about 3 miles away. > � > Then there�s K-factor to consider (bending of microwave path by > atmosphere). > � > *From:* Bill Prince <[email protected]> > *Sent:* Friday, June 10, 2016 4:29 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] Downtilt Calculator > � > > I believe that out to 15 miles or so you can treat the earth as "close" to > flat. No, it's not flat, but the difference is not worth talking about. > Beyond that, and you have to take earth curvature into account. > > � > > bp > <part15sbs{at}gmail{dot}com> > > > On 6/10/2016 2:05 PM, Ken Hohhof wrote: > > So you are a flat earth believer? > � > *From:* [email protected] > *Sent:* Friday, June 10, 2016 1:12 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] Downtilt Calculator > � > Seriously, take the height of the antenna divided by the distance to the > area you want to focus the energy.� > � > If that is one mile away, and the antenna is mounted at 100 feet, > 100/5280.� = .189 > � > Hit the ARCTAN button or the inverse TAN button and we get 1 degree of > downtilt.� > � > TAN = Rise over Run.� > Arctan = degrees of Rise/Run > � > To me that is easier and quicker than going on line and finding a > calculator web page etc.� > With an HP calculator it is 3 key strokes in addition to the numbers.� > � > *From:* [email protected] > *Sent:* Friday, June 10, 2016 12:03 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] Downtilt Calculator > � > <snark> > � > Look for a button called TAN on your calculator. > � > </snark> > � > *From:* Brandon Yuchasz <[email protected]> > *Sent:* Friday, June 10, 2016 11:37 AM > *To:* [email protected] > *Subject:* [AFMUG] Downtilt Calculator > � > > Looking for a very simple down tilt calculation tool and I am wondering > what most of you guys are using. There has to be an easier way then using > math and my brain every time. > > � > > � > > Best regards, > > Brandon Yuchasz > > GogebicRange.net > > www.gogebicrange.net > > � > > > >
