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MY IMAX 2000 ON NON PENETRATING ROOF MOUNT

Sonar

Sr. Member
Apr 8, 2016
1,501
1,016
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I mentioned this contraption so many times I thought I'd share exactly what it looks like.
I'm going to remove the mast that came with the product, and the second (5') I added on top of that.
I will need to drill a few holes in telescopic mast in order to mount it to the N.P.R.M.
The frame is one piece square but separated by 2 one and three quarter inch high steel rails. The mast is fastened right in the center of those two rails via a large bolt.

And the rest where quad pod supports the supplied 5' mast.
I will be using brackets or large clamps to fasten the telescopic to the trees trunk. Maybe some industrial bungees 4 added peace of mind. My yard is just too small for guy wires.
I'm hoping for an s-unit both in and out. I'm also hoping it will withstand the rare high wind storm that will inevitably pass through.
I won't know about any gain until I get the project done. 24' is almost 3 x the 2000's current height.
I purchased a 24' Rohn as the NPRM is also produced by Rohn.
It's worked out great for what it is and it was the members of this site that convinced me to go for it. Especially since it was my only option. 73
 
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Nice, I have seen the base used often on the roof of supermarkets and stores with flat roofs. Built quite well and with the concrete blocks work well.
 
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Reactions: Sonar


I mentioned this contraption so many times I thought I'd share exactly what it looks like.
I'm going to remove the mast that came with the product, and the second (5') I added on top of that.
I will need to drill a few holes in telescopic mast in order to mount it to the N.P.R.M.
The frame is one piece square but separated by 2 one and three quarter inch high steel rails. The mast is fastened right in the center of those two rails via a large bolt.

And the rest where quad pod supports the supplied 5' mast.
I will be using brackets or large clamps to fasten the telescopic to the trees trunk. Maybe some industrial bungees 4 added peace of mind. My yard is just too small for guy wires.
I'm hoping for an s-unit both in and out. I'm also hoping it will withstand the rare high wind storm that will inevitably pass through.
I won't know about any gain until I get the project done. 24' is almost 3 x the 2000's current height.
I purchased a 24' Rohn as the NPRM is also produced by Rohn.
It's worked out great for what it is and it was the members of this site that convinced me to go for it. Especially since it was my only option. 73


Nice sonar... I think the increased height should make a considerable difference in both TX & RX... Definetly let us know how you make out.. I am curious to see how much of a difference its going to make.. (y)
 
Nice sonar... I think the increased height should make a considerable difference in both TX & RX... Definetly let us know how you make out.. I am curious to see how much of a difference its going to make.. (y)
I will do exactly that. I have compiled a list of local and not so local stations (Philadelphia) and their current s unit readings on the Madison.
I will compare once the imax 2000 is 24' in height.
I'm hoping that locals and possibly those in Philadelphia will point out any gain (if there is any) as I've never actually asked anyone for signal reports.
I always thought I'm probably doing what a stock 5 Watt local station does with an antenna at or a bit higher than the recommended wavelength for that particular antenna even though I'm running 500.
I do know this.
When I put the amp in standby no one and I mean no one hears me. Not even the closest locals (10 miles+) 73
 
I will do exactly that. I have compiled a list of local and not so local stations (Philadelphia) and their current s unit readings on the Madison.
I will compare once the imax 2000 is 24' in height.
I'm hoping that locals and possibly those in Philadelphia will point out any gain (if there is any) as I've never actually asked anyone for signal reports.
I always thought I'm probably doing what a stock 5 Watt local station does with an antenna at or a bit higher than the recommended wavelength for that particular antenna even though I'm running 500.
I do know this.
When I put the amp in standby no one and I mean no one hears me. Not even the closest locals (10 miles+) 73

The height then is definetly going to help with that... Try and get it as high as you can, while remaining safe.... You do not want to lose it in the wind, or a storm.. Good luck ... (y)

73's
 
I'm sure you know already but getting it out away from that tree wouldn't hurt anything. I also don't think I'd expect too much improvement after getting all the suggestions done. I'm sure therre will be some improvement but not a huge one. Have fun.
 

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