My SAT-playground

[Captain Jack]

Did you get it off that Russian guy who likes modifying IBUs for Suprals with different opening angles? Probably custom made to your spec. Looks like a GI or Opticum LNB...

 

[battenfan]

This?

http://perovotv.ru/Konverter-SevenSKY-U-24-Quad.html

Probably wider angle than original, a prime focus?

 

[battenfan]

Being that thin, you might try to squeeze it on to the SMW OA 1600, opening angle 80?

 

[RimaNTSS]

Well, I see no definite winner here . Getting more questions instead of answers (I mean, sentence with the question mark at the end is not an answer but still a question ;)). Some mentioned antenna I do not have, such as 4,5m! I only have 4,6m antenna
Illumination angle of the LNB is always relevant, other ways there will be problems with dish illumination. Best situation is when illumination angle of the LNB equal (or slightly smaller) than opening angle of the antenna, only then maximum performance of sat-system can be achieved.
The proper answer would be:
- this is SevenSKY U-24 Quad LNB, customized by one company in RUS to illuminate prime-focus dishes, illumination angle of this LNB is about 120*.
- it can be used on any PFA, but in my case will be used on 4,6m gregorian type of antenna.
So, from folks participated in the discussion, I chose @battenfan as a winner, he gave the proper name of the LNB and specified the type of antenna (PFA) this LNB can be used. BF please send me your mailing address and I will do what I promised.

 

[Archive4]

What? His was a blind guess, your having a laugh!
( What you get up to with your own LNB , in your own garage ) was far closer to the mark! ( Please note, on question mark, just an exclamation )

 

[blademedia]

Was cleaning worm-gear today. Stopped at worm itself.... can not disassemble it furher. Does somebody knows how to do that? @Trust1 , you?

Very nice restore , worm gear is pressed on, you did the correct thing work round it , what size is this sprocket and how many teeth please.

I was thinking of using 6/8 inch having 80/1 gearbox

 

[RimaNTSS]

It is ~160mm in diameter, but # of teeth you can count yourselves.

 

[blademedia]

It is ~160mm in diameter, but # of teeth you can count yourselves.

That's great thanks

 

[archive10]

Made a bar for 1,2 Channel Master, it is fit to arc my antenna is tuned. Instead if ~45cm that 18' actuator is possible to provide it is only needed ~35cm. Also much easier for the mount to exit most-East and most-West positions.

It looks like the CM PM mount is rusting quite briskly. (i'm replying to this posting)

Assuming this is one of the "New old stock" mounts, it's quite alarming how fast the paint peels of!
(re discussion on this thread: Problems with wall bracket ).

Did the mount get knocked a bit, or is is just rust blooming out of thin air?

 

[RimaNTSS]

No, this was really old-stock mount, nothing to do with year-old unused polar-mounts (you've got couple of them), do not worry. I think that brand new polar-mount will start to show some rust after ~5years of usage, depending of the conditions.

 

[archive10]

No, this was really old-stock mount, nothing to do with year-old unused polar-mounts (you've got couple of them), do not worry. I think that brand new polar-mount will start to show some rust after ~5years of usage, depending of the conditions.

you mean like this?

 

[RimaNTSS]

you mean like this?

No, this is too much! I thin this is a result of 10-15 years using in a heavy conditions (not far from the sea area)

 

[archive10]

No, this is too much! I thin this is a result of 10-15 years using in a heavy conditions (not far from the sea area)

Ah, yes, I must admit this is after 25 years on a roof-top in Copenhagen (which is bang-on by the sea)...

I am actually surprised it is not in worse condition. Rust-removal, and galvanizing would yield almost-new-like performance I dare speculate.

(However, picking a new-old-stock from the shelf has a much lower entry-effort!)

 

[RimaNTSS]

We've got about 20cm of snow lasts days and it still snowing. As a result I lost all channels from Astra2E (UK beam), channels from EU beam are all fine.

 

[lovelyperson]

We've got about 20cm of snow lasts days and it still snowing...........

Wow.................that picture makes me feel very cold. Still very lucky here, having a very very extended summer, still wearing T-shirts and shorts after some 7 months............managed to reach 26.4ºC this week but the long 'season' of heat has naturally taken its toll with crops etc.:mad:
The newspapers say that in this area of the Mediterráneo we now have only two seasons, winter and summer!

Great picture of the dish, thanks.

Today:-

 

[wod]

Surprised you don't have a heating system on the dish that size.

 

[RimaNTSS]

There is heating system (8 segments), but I will not be connecting it to the grid. I case I need, I can go outside and wipe antenna with the broom.

 

[RimaNTSS]

I was thinking about CM LNB-holder issue for long time, but was inspired by @meikel one more time. Decided to make some prototype, out of INOX of course. Will install it to real antenna some day to see how it fits.

 

[Ghostleader]

I was thinking about CM LNB-holder issue for long time, but was inspired by @meikel one more time. Decided to make some prototype, out of INOX of course. Will install it to real antenna some day to see how it fits.

Nice, an improvement over the original, the metal clamp pieces are the same ones we have in the plant room at work holding the water/steam piping.

Sent from my thl_T7 using Tapatalk

 

[RimaNTSS]

To test new holder brought dish in the garage.... it is too cold, snowy and dark outside.