arctan sounds like a villain from he-ma On Tue, Oct 14, 2014 at 10:00 AM, Chuck McCown via Af <af@afmug.com> wrote:
> Trig? Tangent? > How far out do you want to focus the main lobe? > Take the tower height, divided by that distance (both in the same units) > and do the arctan of that. > > So if the tower was 200 feet, and you want to target a spot 2 miles away, > arctan(200/10560)=1 degree > > > > *From:* Paul McCall via Af <af@afmug.com> > *Sent:* Tuesday, October 14, 2014 8:13 AM > *To:* af@afmug.com > *Subject:* [AFMUG] Downtilt tool > > > We have upgraded a bunch of towers to ePMP (2.4) are finding we are going > to really be more exacting with our downtilts to avoid spectrum overlap… > more than we did with 100 series, because of the SNR requirements. I > assume 2.4 450 would have similar requirements. > > > > So, I want to map out my down-tilt plans . Is there a good online tool > for this? > > > > Paul McCall, Pres. > > PDMNet / Florida Broadband > > 658 Old Dixie Highway > > Vero Beach, FL 32962 > > 772-564-6800 office > > 772-473-0352 cell > > www.pdmnet.com > > pa...@pdmnet.net > > > -- All parts should go together without forcing. You must remember that the parts you are reassembling were disassembled by you. Therefore, if you can't get them together again, there must be a reason. By all means, do not use a hammer. -- IBM maintenance manual, 1925
