whoever
join:2006-03-13
Avon, CO
| vertical stand-offs
We need to mount a few 2.4 verticals off the side of a few towers and I'm finding that the stupid stand-offs are 3 times the price of the antenna. It just needs to get the vertical 3ft or so away from the tower. I was thinking we could make something easily out of 1 inch PVC and clamp it to the tower leg. What do you guys use or make? |
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AMD Phreak
Premium
join:2003-12-14
1 edit | »www.tessco.com/products/displayP···ntPage=1
More sizes:
»www.tessco.com/products/displayP···oupId=20 |
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whoever
join:2006-03-13
Avon, CO
| reply to whoever
Thanks, but I looked at those on Tessco and they are so much more expensive then the 15dbi vertical itself plus they don't hold the antenna 3ft away from the tower. Looks like you can use a few of the cross connect brackets and some aluminum tubing, but the darn support will add up to $150 or so to hold a $50 vertical. There must be a less expensive way ... like making your own. |
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jdubber
join:2006-10-03
Napa, CA | Kinda like the beer can costing more than the beer itself. Have you tried calling some local welders? You might save money in the long run by having them weld a few "arms" for future use. |
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sbrown
join:2006-07-17
Sandy, OR
| reply to whoever
Get one of these: »www.pacwireless.com/products/UM.shtml
And then add some U-bolts to it - done.
I have bought stand-offs in the past, but these are way cheaper depending what I am mounting.
If I am mounting a 2-3' dish, heck no - but omnis and panels are no problem. |
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LLigetfa
join:2006-05-15
Fort Frances, ON | Even using the UML, it would get you only 14 inches of standoff.
»www.pacwireless.com/products/PAW-UM.pdf |
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AMD Phreak
Premium
join:2003-12-14 | reply to whoever
Crossover plates, 3" pipe, and a tower crew. |
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joshg409
join:2005-05-03
Ottumwa, IA
| reply to whoever
Standoff |
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John Galt
Forward, March
Premium
join:2004-09-30
Happy Camp
 ·CenturyLink
| reply to whoever
said by whoever  :I was thinking we could make something easily out of 1 inch PVC and clamp it to the tower leg. What do you guys use or make? Don't use PVC...it won't take the weight.
Use 1-1/4" (or 1-1/2") electrical conduit. It comes in 10 foot lengths. Have an electrical shop turn you some 12"-18" stub 90 degree bends on the end of the stick. Use u-clamps or something other to attach the conduit to the tower.
You can cut the conduit to get the proper distance (if you need something a specific length). If you need more length you can get 20 foot sticks from a tubing supplier.
This will be very strong and lightweight. If you need something a bit more heavy-duty, use rigid (IMC) conduit and gusset plates. In either case, don't scrimp on the mounting hardware.
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A is A |
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LLigetfa
join:2006-05-15
Fort Frances, ON | Use two pieces of Uni-Strut with U-bolts to bolt horizontally to two of the tower legs. A length of metal conduit for the vertical U-bolted to the ends of the Uni-Struts and a third Uni-Strut on the diagonal for strength. |
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thewildthang
join:2005-12-21
Winfield, AL
| reply to whoever
Over the years I think I've used every method suggested above but I will throw in one more. Along the lines of John Gault's suggestion, I have done the same thing down at the local muffler shop. Tell them what dimensions you want, they'll bend it in a z shape and then all you need are some ubolts/clamps to attach it to the tower. I do suggest making the horizontal run long enough to attach one vertical leg to the opposite tower leg then run it across the face of the tower and put another clamp on the horizontal part of the mount where it leaves the tower, much stronger that way. |
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AMD Phreak
Premium
join:2003-12-14
| Again,
If I were doing it, I would do something similar to what joshg409 posted, except that I would use 2" rigid pipe instead of the angle iron. You strap the top pipe to the tower with a pair of crossover plates as well as the bottom pipe. The verticle section also gets mounted on the end of the pipes with crossover plates.
To expand on Johns comment about hardware:
What ever you do, make sure it is hot dipped galvanized. You dont want the materials rotting and then causing RF problems on the tower if there are other radio antennas on the tower (2-way, broadcast, paging, etc).
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Using a non-ports-system OS is like masturbating with a cheese grater
"No job is so important, and no service is so urgent that we cannot take the time to do it safely."
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