Channel master smc 1.2m restoration

zorrin

zorrin

Specialised contributor
My Satellite Setup
CM 120 Ku 52°E to 45°O
CM 120 Ku 50°E to 45°O
CM 120 Ku SDR 25.8°E
CM 100 Ku 5°W
CM 100 Ku 9°E
CM 90 Ku
Visiosat Bisat Ku
Visiosat 70 Ku
Selfsat 2x Ku
Selfsat 2x Ku
Octagon SF8008
GTMedia V8 Nova, V8X, V8 UHD 4K, V9 Prime
Edision Piccollo
My Location
france
Hi all,
I just started to restore a 1.2m Channel Master. Certainly installed by a "professional". it is an equatorial mount which was used for a fix installation. the fixing spacers are missing and nothing really prevented that in high winds the antenna turns ... cleaning, sanding, primer and white paint.
IMG_5820.webpIMG_5821.webpIMG_5830.webpIMG_5831.webp
 
Certainly unlikely to move in high winds.
 
there is nothing to block it from left to right here. I will modify it very quickly.

IMG_5830 2.webp
 
the foot must also be white to make the whole more discreet. primer coat finished.

IMG_5832.webp
 
As on all Channel Masters 1.2M after 15years, one of the two screws cannot be unscrewed...
IMG_5836.webp
 
The screw goes into a brass nut embedded in the plastic,in the past i have turned the screw until the nut becomes free from the plastic. the nut can be removed and then glued back into the plastic. i bit butcherous :-ohmy i know but has worked for me.
 
purplemarina said:
The screw goes into a brass nut embedded in the plastic,in the past i have turned the screw until the nut becomes free from the plastic. the nut can be removed and then glued back into the plastic. i bit butcherous :-ohmy i know but has worked for me.
Click to expand...
A hot-melt glue gun would probably be a good way of securing the nut.
 
That is how I've repaired the holder. Removed remains of the original inserts and glued (epoxy rezin) in M5 INOX bolts.
 

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zorrin said:
the foot must also be white to make the whole more discreet. primer coat finished.

View attachment 134364
Click to expand...

Nice! but isn't the diameter of the polar mount wider than this arm? Also, isn't a 120cm CM dish too heavy for one of these arms?

I have one of these and I feel weird mounting it in one of these arms, I feel it would bring the wall down.
 
Chr0nik said:
Nice! but isn't the diameter of the polar mount wider than this arm? Also, isn't a 120cm CM dish too heavy for one of these arms?

I have one of these and I feel weird mounting it in one of these arms, I feel it would bring the wall down.
Click to expand...
I find the dish on this arm.
It's a very long one for a close 90° installation.
Iwill use chimical to fix it on my wall.
 
purplemarina said:
The screw goes into a brass nut embedded in the plastic,in the past i have turned the screw until the nut becomes free from the plastic. the nut can be removed and then glued back into the plastic. i bit butcherous :-ohmy i know but has worked for me.
Click to expand...
I did it like you on my other CM but impossible to reuse the brass nut.
in the end, I bought a new one on Satellite Superstore because i'm in love with this dish :wub:
For this new antenna, i will see.
 
Yes this one.
I have not yet tested it on my first CM. I plan to install it this summer.

ravenfeedsupportboss.webp
 
Yes !
With a lot of W40 the screw gave upIMG_5866.webp
 
I was planning to use the complete Channel Master set for the LNB but the LNBs have changed ...
IMG_5867.webp

So i will not use the cover kit at this time.

Today i have a question about Dielectric plate inside the feedhorn, somebody can tell me if i have to keep it when i use this kind of LNB ?
In fact when we need to use it or not ?

IMG_5865.webp

Another problem, I only have one C120 adapter for two Channel Master antenna.

1.webp

So i just send this plan to a friend to print it in 3D.

Channel Master Plan.webp
 
The dielectric will not be of use at Ku frequencies these days, so you can pull it out of the feed.
 
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