When I bought a 100cm dish to replace my old Winegard 76cm dish, I decided to see what I could do to make the old dish usable in my RV when we snowbird this winter. I saw a photo of a similar wood base to hold the mast & dish somewhere on the internet. But that one looked pretty crude for what I had in mind.
I wanted a lap joint, carriage bolts with wing nuts to hold things together, and built in T level and storage for the odds and ends of the setup. The wood is 2x4 pressure treated, since it will be out in contact with the ground and in the rain that sometimes comes in the desert. I used 54" for the length requiring two 8 foot boards. Could have tried 48" using only one. But the excess wood was used for small pieces to be used on soft ground, keeping the eyebolts from sinking into the ground. And I figured the longer length would be more stable in the high winds of the desert.
The eye bolts used to level the base and the 12" spikes to help hold it in place during the Santa Ana winds have their own recessed cutouts for storage. The cutout recesses all have drain holes. The two wood pieces are held together for storage with two bolts and wing nuts, with all the eye bolts, wing nuts, T level, & spikes nested in place inside.
I replaced the DG-280 motor's bracket metric U-bolts with 5/16" bolts, that in turn allowed adding a plate covering the end of the mast to support the weight of the antenna assembly. This makes aiming horizontally for the true south satellite easier. Without the weight being supported by the plate, the whole thing wants to zigzag down the mast. But with the weight being supported by the plate, the assembly easily rotates without sliding down the mast. A 5/16" U-bolt mount on the mast is positioned to hold the handle of the 40 pound water bucket to prevent it from falling off the base.
I figure the 40 pound water bucket and spikes should keep it in place. Last year we saw 55 mph plus wind gusts on my weather station.
I bought 8" x 5/16" eye bolts to do the leveling. But the threaded portion wasn't long enough. I used a die to thread the rest of the eye bolt, but in hind sight, think a long threaded rod with a plastic knob Locktite'd on would be a better method. The bolts thread into a brass machine/wood screw inserts on the tip of each leg.
The T level is used by first leveling the cross leg, then leveling the long front leg. Typically one pass and it's level, but sometimes a second pass is required if the long leg needs to adjust further than the bolt will allow. First time after leveling, I checked the mast for plumb and shimed the T level to match. Three eye bolts do the leveling, the fourth one on the short leg, only is used to prevent the water bucket from lifting the long leg off the ground.
The Invacom QPH-031 LNB uses two 22KHz switches to select circular or linear outputs for either the RV's living room or bedroom TV's.
The parts are painted gold, green, & blue to match the trim colors of my RV.
I wanted a lap joint, carriage bolts with wing nuts to hold things together, and built in T level and storage for the odds and ends of the setup. The wood is 2x4 pressure treated, since it will be out in contact with the ground and in the rain that sometimes comes in the desert. I used 54" for the length requiring two 8 foot boards. Could have tried 48" using only one. But the excess wood was used for small pieces to be used on soft ground, keeping the eyebolts from sinking into the ground. And I figured the longer length would be more stable in the high winds of the desert.
The eye bolts used to level the base and the 12" spikes to help hold it in place during the Santa Ana winds have their own recessed cutouts for storage. The cutout recesses all have drain holes. The two wood pieces are held together for storage with two bolts and wing nuts, with all the eye bolts, wing nuts, T level, & spikes nested in place inside.
I replaced the DG-280 motor's bracket metric U-bolts with 5/16" bolts, that in turn allowed adding a plate covering the end of the mast to support the weight of the antenna assembly. This makes aiming horizontally for the true south satellite easier. Without the weight being supported by the plate, the whole thing wants to zigzag down the mast. But with the weight being supported by the plate, the assembly easily rotates without sliding down the mast. A 5/16" U-bolt mount on the mast is positioned to hold the handle of the 40 pound water bucket to prevent it from falling off the base.
I figure the 40 pound water bucket and spikes should keep it in place. Last year we saw 55 mph plus wind gusts on my weather station.
I bought 8" x 5/16" eye bolts to do the leveling. But the threaded portion wasn't long enough. I used a die to thread the rest of the eye bolt, but in hind sight, think a long threaded rod with a plastic knob Locktite'd on would be a better method. The bolts thread into a brass machine/wood screw inserts on the tip of each leg.
The T level is used by first leveling the cross leg, then leveling the long front leg. Typically one pass and it's level, but sometimes a second pass is required if the long leg needs to adjust further than the bolt will allow. First time after leveling, I checked the mast for plumb and shimed the T level to match. Three eye bolts do the leveling, the fourth one on the short leg, only is used to prevent the water bucket from lifting the long leg off the ground.
The Invacom QPH-031 LNB uses two 22KHz switches to select circular or linear outputs for either the RV's living room or bedroom TV's.
The parts are painted gold, green, & blue to match the trim colors of my RV.
Attachments
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base and T level cablibrated to plumb mast.jpg54.2 KB · Views: 265
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without 40lbs water bucket.jpg58.6 KB · Views: 282
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ready to store in rv.jpg59.3 KB · Views: 274
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planned storage on back of dish.jpg51.9 KB · Views: 282
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erected backside.jpg54.9 KB · Views: 263
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erected 76cm dish assembly.jpg32 KB · Views: 279
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close up weight bearing plate.jpg62.1 KB · Views: 236
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base cross with dimension and parts store cutout.jpg66.6 KB · Views: 205