That's the method I've generally used. You can further calculate based
on the vertical beamwidth where the outer edge of the -3db coverage
circle would land, and where the inner edge would land. Then you can
attempt to visualize it.
I feel like somebody once linked to an online map tool that would show
you a simple visualization of where your sector would cover. I can't
think of who or when now.
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 <mailto:af@afmug.com>
*Sent:* Tuesday, October 14, 2014 8:13 AM
*To:* af@afmug.com <mailto: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 <http://www.pdmnet.com/>
pa...@pdmnet.net <mailto:pa...@pdmnet.net>
