My SAT-playground

[Captain Jack]

Definitely a Channel Master

 

[Riverblue]

Specs say 4no M8 x 60mm carriage bolts
‎viasatelital.com/manuales/channel_master/channel-master-type-120.pdf

 

[RimaNTSS]

Thanks, yes BOLT-ROUND HEAD, SQUARE NECK M8X60
will probably order M8X70mm, just in case.
And, of course, it is CM 120, it is written on polar-mount and stamp on the dish "made in USA"

 

[archive10]

I've found Echostar dish (that was announced by previous owner), that was also wall-stand and black handle (as I found out black handle was actuator!). Owner was selling cuz he could not install dish on hes new house.
So, I went to pick up stuff and was surprised little bit.... that was not Echostar but.... you know that pattern ;) I did not mind at all Mirror is in ship shape and "Black handle" as well. As a bonus I got polar-mount and galvanized wall-mount. Will not tell how much did I pay for this set to not make anybody jealous.
But, to not make me too happy, there is something missing - 4 screws to connect dish to polar-mount! But, maybe that is good, anyway, I would change them to INOX made. Can anybody tell me proper size of those screws? I think something like 8mm and approximately 70-80mm.

Incredible luck!
Polar mount looks almost new...
Cannot have exposed to the outside world for anything but short periodd of time.
Congratulationson a very good find.
(Finally got your channel master then...)

 

[archive10]

Thanks, yes BOLT-ROUND HEAD, SQUARE NECK M8X60
will probably order M8X70mm, just in case.
And, of course, it is CM 120, it is written on polar-mount and stamp on the dish "made in USA"

I bought new ones, and the 60mm are enough. Else you have to add spacers or lots of washers to teach the thread...

 

[RimaNTSS]

Finally got your channel master then...

Yes.... it was actually too fast. I would probably like more if I was spending more time in finding one, would be more fun and happiness at the end

 

[RimaNTSS]

60mm are enough

But if I need to attach something to same screw than 60mm could be not enough. Longer screw I can always cut. However, I am learning how to weld, and can also practice to attach some piece of threaded bar to the short screw

 

[Archived-1]

But if I need to attach something to same screw

Something like support arms for an LNB arms mod ;), nice find Rimants

 

[RimaNTSS]

Something like support arms for an LNB arms mod

You are reading my minds, Martin?!

 

[Archived-1]

You are reading my minds, Martin?!

Lol, it would be the best way to mod the arms

 

[archive10]

But if I need to attach something to same screw than 60mm could be not enough. Longer screw I can always cut. However, I am learning how to weld, and can also practice to attach some piece of threaded bar to the short screw

ok, but 10 mm is quite a lot.
You can see the mounting here with 60mm bolts...
Perhaps 65mm would be ideal, if one could source them?

 

[RimaNTSS]

I already ordered 12 pieces INOX 70mm screws. I do not have any problems with angle-grinder. When I have screws, and if somebody need 4 of them I will be ready to send them to your address with no profit, just price I payed plus postage.

 

[RimaNTSS]

And this is wallmount which came with CM120, 76mm pipe. Have no idea when I will use it, if at all.

 

[RimaNTSS]

Brought home feedarms and polar-mount, washed everithing in bath. As usually used wife's expencive shampoo (please do not tell her :mad: ). There is not so much rust on polar-mount, but, anyway will probably do some cleaning and painting. Screws M6 for feedarms and LNB holder already in the trash bin as I have plenty of INOX ones. I would also change big nuts&bolts, but see that they are in fine condition, maybe apply some grease and they will stay for some years. LNB holder is 40mm. Opened LNB cover, even though there is small crack, water never been inside, I think it is in working condition. Interesting feedhorn this LNB has, looks similar like FIBO dishes have. Actuator is not new but condition is quiet OK.

 

[Captain Jack]

Is that a proper CM feedhorn?

 

[RimaNTSS]

I do not know. It is actually Grundig LNB, old and heavy.

 

[Captain Jack]

Interesting... And the feedhorn has the grooves like the CM feedhorn. Maybe this one was designed for the CM dishes?

 

[RimaNTSS]

This LNB fits in original CM1,2m holder in such a way that it is impossible to move it back-forward, only skew could be adjusted. I think it is very good, that means, that LNB's Phase center is co-located with dish Focal point. Assuming this is true it is possible to tune antenna with this LNB to maximum signal and than just change LNB to IBU and we again have properly adjusted system.

 

[archive10]

This LNB fits in original CM1,2m holder in such a way that it is impossible to move it back-forward, only skew could be adjusted. I think it is very good, that means, that LNB's Phase center is co-located with dish Focal point. Assuming this is true it is possible to tune antenna with this LNB to maximum signal and than just change LNB to IBU and we again have properly adjusted system.

Very interesting.
Never seen a pic of such a feedhorn before.
Do post more closeups of the bare feedhorn if you can.

 

[RimaNTSS]

Do not have good conditions to take quality pictures. There are some