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Which pole?


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14 replies to this topic

#1 OFFLINE   cbhpi

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Posted 23 April 2012 - 05:51 PM

Which pole would be better for mounting an AU9-S-SWM 5 LNB dish - a 12 foot, 1.9" OD sch 40 steel pipe, or a 12 foot, 2" OD, 9 gauge steel tube. I'm not sure, but I think the sch 40 is thicker, and, therefore, sturdier, but the outside diameter is not big enough - right?

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#2 OFFLINE   WestDC

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Posted 23 April 2012 - 06:09 PM

Which pole would be better for mounting an AU9-S-SWM 5 LNB dish - a 12 foot, 1.9" OD sch 40 steel pipe, or a 12 foot, 2" OD, 9 gauge steel tube. I'm not sure, but I think the sch 40 is thicker, and, therefore, sturdier, but the outside diameter is not big enough - right?



Right!! 2" OD
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#3 OFFLINE   samrs

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Posted 23 April 2012 - 06:15 PM

Mount - 2", Pole, 6' (72") Length, 16ga Gal. Steel


Directv's spec for tech's.
HR20-100, HR20-700, HR24-100, HR34-700/AM21

#4 OFFLINE   cbhpi

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Posted 23 April 2012 - 06:23 PM

Mount - 2", Pole, 6' (72") Length, 16ga Gal. Steel


Directv's spec for tech's.


I need the extra height. If the height is doubled, does the gauge need to be doubled?

#5 OFFLINE   west99999

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Posted 23 April 2012 - 06:32 PM

When you are trying to hit a satellite 22,000 miles away the difference between a 6ft pole vs a 12ft pole is not that much. If you cant get signal with a 6 ft pole you might want to rethink your tv provider unless you are trying to clear a building or something that will not grow. Im not sure the exact difference but your talking just a degree or maybe 2 in elevation you would gain.

#6 OFFLINE   cbhpi

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Posted 23 April 2012 - 06:34 PM

When you are trying to hit a satellite 22,000 miles away the difference between a 6ft pole vs a 12ft pole is not that much. If you cant get signal with a 6 ft pole you might want to rethink your tv provider unless you are trying to clear a building or something that will not grow. Im not sure the exact difference but your talking just a degree or maybe 2 in elevation you would gain.


It's a condo situation requiring a pole mount behind a staircase. I need to get over the first landing rail.

#7 OFFLINE   Beerstalker

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Posted 24 April 2012 - 12:12 PM

The 9 gage is actually thicker in this case. 9 gage is 0.148", the 1.9" od SCH40 pipe wall thickness is 0.145".

So I would definitely go with the 2" od 9 gage tube (this is actually more than double the thickness of the 2" od 16 gage pipe DirecTV recommends which is only 0.065" wall.

That said 12' tall is probably going to be swayed pretty easily by wind if it is exposed.
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#8 OFFLINE   cbhpi

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Posted 24 April 2012 - 12:26 PM

The 9 gage is actually thicker in this case. 9 gage is 0.148", the 1.9" od SCH40 pipe wall thickness is 0.145".

So I would definitely go with the 2" od 9 gage tube (this is actually more than double the thickness of the 2" od 16 gage pipe DirecTV recommends which is only 0.065" wall.

That said 12' tall is probably going to be swayed pretty easily by wind if it is exposed.


Thanks for your input! From everyone's responses, it seems I should just abandon the idea. I thought if I planted 3 feet of the pole, it would work.

#9 OFFLINE   studechip

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Posted 24 April 2012 - 12:34 PM

I have a 12' fence post buried 3.5' in the ground with no guy wires. It's been there since 2006 with no issues. I did take it down during the hurricane last year, but that's the only time I did that.

#10 OFFLINE   cbhpi

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Posted 24 April 2012 - 12:39 PM

I have a 12' fence post buried 3.5' in the ground with no guy wires. It's been there since 2006 with no issues. I did take it down during the hurricane last year, but that's the only time I did that.


I just finished reading some pole mount installation instructions that recommend, in circumstances where a longer pole is needed, a long 3" OD pole, with one end threaded, with a 3" to 2" reducer, and then a shorter piece of 2" OD tubing. I'm encouraged again.

#11 OFFLINE   harsh

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Posted 24 April 2012 - 01:13 PM

The problem is that there's no standard threading on 2" tubing. At some point you need a solid connection from the pipe to the tubing and they don't make fittings for that. Absent mounting struts, you're depending a lot on the slip-on sleeve.

You could have something welded and cold galvanized but it likely won't be cheap. While you're at it, make sure they weld a couple of lugs on the section of pipe that is going to be in the ground (and galvanize those welds too) so that the pole won't spin in in the hole.

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#12 OFFLINE   ds2992

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Posted 24 April 2012 - 06:17 PM

I have done what your suggesting with the larger post and reducer. It works very well. The larger diameter post will be significantly stiffer. You can get them from plumbing suppliers. also the reducer. what you will need is a 3 inch ID to a 2 inch ID reducer with a 3 inch long nipple and you will then need to cut the elbow off the mounting arm that comes with the dish and stuff that inside the 2 inch ID nipple and secure it in place with tech screws. this is called a sleeve in the business. It is a bit of work but you will have a very stiff mount.

#13 OFFLINE   cbhpi

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Posted 25 April 2012 - 10:09 AM

Thanks for everyone's input.

#14 OFFLINE   Old_School

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Posted 01 May 2012 - 06:46 AM

The problem is that there's no standard threading on 2" tubing. At some point you need a solid connection from the pipe to the tubing and they don't make fittings for that. Absent mounting struts, you're depending a lot on the slip-on sleeve.

You could have something welded and cold galvanized but it likely won't be cheap. While you're at it, make sure they weld a couple of lugs on the section of pipe that is going to be in the ground (and galvanize those welds too) so that the pole won't spin in in the hole.


What about holding the slip on sleeves with some automotive exhaust claps? might not be pretty but, in the end isn't the goal to get the picture on the tv? just an idea

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#15 OFFLINE   harsh

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Posted 02 May 2012 - 07:55 AM

What about holding the slip on sleeves with some automotive exhaust claps?

Muffler clamps won't fit around the sleeve as it has the bolt flanges sticking out.

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