View Full Version : WISP Tower Setup
echeco
04-29-2009, 09:02 PM
hi... I have been reading and searching the forum... I want to share a little bit of what I am trying to accomplish.
SETUP:
1 Tower (10 to 30 meters)
2 UBIQUITI XTREMERANGE2
1 MIKROTIK RB/433AH
3 2.4 GHz 17 dBi 120° Sector Panel WLAN Antenna
I am not quite sure if I need another Mikrotik RB/433AH + 1 XR2 for the third panel.
I don´t really get these, but I know that It will be crucial before setting all up.
Antenna beamwidth = ? meaning the top?
Antenna downtilt = ? is downtil the bottom ?
Need to cover a small city that has a Radio of 6km. I do got the WiFi_antenna_downtilt.pdf that WHT recommends but i got errors on excel when working with it.
Found this page instead http://www.wirelessconnections.net/calcs/AntDownTilt.asp
Just need some help to figure out the Antenna Downtilt, beamwidth and Antenna height also any comments from you guys are welcome.
Cheers
:D :D :D :D
Here's the full spreadsheet:
http://telecomanddata.com/wifi_downtilt_calculator.xls
Beamwidth is the sum of the angles over and below the center boresight of the antenna. An 10º beamwidth antenna pointed level with the horizon would have 5º towards the sky and 5º towards the gournd.
echeco
04-30-2009, 12:24 PM
Here's the full spreadsheet:
http://telecomanddata.com/wifi_downtilt_calculator.xls
Beamwidth is the sum of the angles over and below the center boresight of the antenna. An 10º beamwidth antenna pointed level with the horizon would have 5º towards the sky and 5º towards the gournd.
Thanks WHT
:)
bobcopro
05-08-2009, 04:45 AM
Just a tip from experience, if you're planning on doing the tower work yourself, allow 4-5 times longer for everything than it takes in the shop. Everything is slower when you're hanging in the air and bring LOTS of extra nuts, bolts, etc with you as they're hard to pickup after you drop them!
Believe it or not, after twenty years of tower work, I have yet to drop anything from a tower.
Although I did loose a CAT tractor cap from 500 feet once.
And a Frisbee will fly out several hundred feet and then eventually loose spin and tumble.
echeco
05-08-2009, 07:14 PM
Just a tip from experience, if you're planning on doing the tower work yourself, allow 4-5 times longer for everything than it takes in the shop. Everything is slower when you're hanging in the air and bring LOTS of extra nuts, bolts, etc with you as they're hard to pickup after you drop them!
Thanks bobcopro for the tip...
:)
echeco
05-08-2009, 07:17 PM
Believe it or not, after twenty years of tower work, I have yet to drop anything from a tower.
Although I did loose a CAT tractor cap from 500 feet once.
And a Frisbee will fly out several hundred feet and then eventually loose spin and tumble.
WHT, how does it feel to be that high???
:shock: :shock:
bobcopro
05-09-2009, 04:54 AM
I've had 3 hand surgeries in the last two years and that lack of feeling in my palms and problems with fine motor skills isn't helping with that. Worse problem is I'm so damn paranoid about it that I drop more parts and it takes way longer. Did I mention I'm not fond of heights either? I know, wrong line of work! Lost my little 10.8v Makita impact driver of the tower from around 55' last week. It bounce about 6' high off the rear deck, but still works like a champ. Everyone knows not to stand with 20' of the tower when I'm up there!
WHT, how does it feel to be that high???
:shock: :shock:
"I can see for miles and miles and miles...and miles" <- The Who, circa 1975
