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Solid Signal SKY32816 Non-penetrating Roof Mount Base (SKY32816)
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- Ideal for flat-roof mounting a TV Antenna or Dish
- Safe & secure installation on flat roof surfaces
- Heavy-duty steel construction | Base consists of (6) lengths which can be assembled from 35.5" x 35.5" up to 36" x 36" square | Works with standard grade 2 bolts
- Requires concrete block ballast for installation (not included)
- Requires mast for installation (not included); see our selection of masts: SKY32817A, -B, -C1 or -D
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|Sold By||a1-Components||a1-Components||Satellite Oasis||Amazon.com|
|Item Weight||1.00 lbs||16.00 lbs||1.00 lbs||4.20 lbs|
Use this Non-Penetrating Roof Mount Base to safety and securely install dish antennas on flat roofs where drilling holes isn’t an option. The heavy-duty steel base consists of (6) pieces of equal length which can be assembled from 35.5” x 35.5” up to 36” x 36” for a wide-set, sturdy base – the perfect size for the concrete blocks needed for ballast (not included). Additionally, the (4) struts of the unit are 22.5” in length. Once placed and weighed down, simply add a mast (sold separately), and attach your antenna/dish of choice. See our selection of compatible masts: SKY32817A, SKY32817B, SKY32817C, and SKY32817D.
Top reviews from the United States
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Based on the picture, you'd think you wouldn't need instructions. Not so fast, my friend. The two sets of pieces are all EXACTLY the same length, hence the mythical 4-way bolt. To make matters worse, the horizontal pieces are not symmetrical! This means your bottom bolt would have to go in at an ANGLE stripping the threads. Good luck with that!
To make matters worse, the painted angle iron got a few drops of water on it during the night. By morning, there were rust spots.
This item must be what's meant by "Chinese dumping of inferior iron and steel".
By purchasing a whole lot of extra hardware, I finally got this thing assembled into something RESEMBLING the picture, but not closely resembling.
Just stay away from this headache.
In my long-distance wireless Internet application, it seems impervious to the strong winds we often have in our mountain valley. (The reason for the earlier three-star review was just misleading dimensions, which made assembly difficult and forced me to buy a second sleeve to connect the two masts.)
I bought this particular mount for its staggered four-support structure. That design seemed a good one for preventing torsion of the mast in wind, which can misdirect the antenna and reduce signal strength.
With my ten-foot double mast, I'm now getting a 30 to 32 decibel signal-to-noise ratio, and signal quality readings in the 60% to 70% range. I never got close to those readings before, let alone in today's winds. The long mast does wobble a bit in high winds, but it doesn't seem to twist, and that makes all the difference.
In addition, a small thrust bearing and races, placed in the sleeve connecting the two masts, made aiming the antenna accurately a dream. The bearing and races are available from Amazon.com (see parts list below).
If you want to use a double mast like me, be sure that you have a grille antenna. A solid dish would probably not work in our high winds with the double mast. As it is, I have about 500 pounds of ballast on the mount: eight standard cinder blocks, 32 bricks, and two huge stones. (According to a Rohn Products LLC distributor, a solid antenna the size of my grille, four square feet, would require over 800 pounds of ballast on a ten-foot mast.)
A professional ten-foot mount, with a broader base, would cost over $450 from Rohn. The parts for my mount cost me about $130, less than one-third as much.
Here's the parts list:
One Solid Signal SKY32816 Non-penetrating Roof Mount Base (SKY32816)
Two compatible five-foot masts, Skywalker Signature Series 60in Length 1.25in O.d. Antenna Mast for Sky32816
One Koyo NTA-1220 Need Roller Thrust Bearing, 3/4" ID, 1-1/4" OD Koyo NTA-1220 Needle Roller and Cage Thrust Assembly, Open, Steel Cage, Inch, 3/4" ID, 1-1/4" OD, 5/64" Width, 14000rpm Maximum Rotational Speed, 8200lbf Static Load Capacity, 2450lbf Dynamic Load Capacity
Two Koyo TRC-1220 Thrust Bearing Races, same dimensions Koyo TRC-1220 Thrust Roller Bearing Washer, TR Type, Open, Inch, 3/4" ID, 1-1/4" OD, 3/32" Width
One Mast Connecting Sleeve: Online Metals Mild Steel A513 Type 5 DOM Tube,
1.375" OD x 0.049" wall x 1.28" ID, cut to random length in 10" to 12" range
Three 1/4" by 3/4" stainless hex bolt-nut-lockwasher combos
Two 1/2" x 8-32 stainless hex-phillips screws to set antenna rotation angle.
Eight standard cinder blocks for ballast
32 standard weatherproof patio bricks for extra ballast and mainenance stand.
Special tools needed for assembly: (1) drill press (to drill three 1/4" holes in sleeve and upper mast and two set-screw holes in sleeve); (2) a one-foot or longer part holder and extractor (to hold nuts inside sleeve while attaching it to upper mast with stainless bolts); (3) a portable drill (to drill holes for set screws through lower mast inside sleeve, after assembly); and (4) an 8-32 bit and tap to tap set screw holes in both sleeve and mast. (Tapping sleeve for one set screw allows mast to stay in place rotationally while drilling and tapping hole through inner mast for other set screw.)
The still relevant parts of my original review follow:
The bad news is that this mount is made in China, so everything is metric.
The nominally half-inch nuts are a bit oversize. So you have to shudder or bang on a half-inch wrench and shudder or bang it off, for every eighth turn in tightening eleven nuts successively. This does neither the nuts nor your morale much good.
There are no assembly instructions, so you have to discover an assembly trick by trial and error. Unlike all the other outside bolts, the ones at the ends of the center channel, which contains the mast base, must face outward, with the bolt ends and nuts in toe-stubbing territory. Otherwise, you can't tighten them.
Between the oversize nuts and this trick, a forty-five minute assembly job took two hours, with lots of swearing. I also had to re-order the connecting sleeve to fit the slightly oversize masts.