Advice Needed Before I make a complete ass of myself again!

[RimaNTSS]

if I get this right, from point B to point G in a direct line should be approx 840 mm on a straight line across dish face and approx 937 mm allowing for dish indentation on a standard offset 1.8 dish?

Nope, not 840mm but 800mm on the straight line. And I do not understand what you mean by 937mm!
Did you measure (can you confirm) exact dimensions of your dish 1800 x 1935 mm and depth 170, or you take those dimensions for granted from specifications and other users sayings?

 

[Archive4]

Nope, not 840mm but 800mm on the straight line. And I do not understand what you mean by 937mm!
Did you measure (can you confirm) exact dimensions of your dish 1800 x 1935 mm and depth 170, or you take those dimensions for granted from specifications and other users sayings?

YOU DOUBT THE WORD OF MILAMBER? All measurements taken by myself, and the laser is still sat in the lnb holder as we speak should you require any further dimensions!

 

[RimaNTSS]

should you require any further dimensions!

Yes.... depth of the dish measured by you. And , could you show markings on the dish between which you have measured vertical and horizontal dimensions of the working area of your dish. Something like I marked on another dish another day . And I would also like that other owners of such a nice dish (Laminas 1,8m) do the same measurements and share their findings here. That would allow to know issue more precise.

 

[Archive4]

You are having a , I have two of these " nice " Laminas 1.8 m dishes, and have measured them both on more than one occasion, they ain´t going to change! 1800 x 1935. 90 degree depth at intersection is 170 mm, at angle from lnb using laser is 185 mm, hitting the " G " spot or not they work well, better than the Famaval prime I have along side the Laminas.

Going back to the original question, in layman´s terms, " Does an offset dish centre spot mean half way between north and south, and east and west " guess the answer is no.
Why is life so complicated?

 

[RimaNTSS]

Even if we have here "silent followers" (I suspect one) , who usually have nothing to say and they simply disagree (we do not have"Disagree" or "Dislike" button ) on anything I say or ask, as they, probably did not do anything themselves at all to contribute here or elsewhere. This is not to you @Milamber
But, to the topic: If you made measurements several times than you should have some marks on the face of the dish, I mean points "A", "B", "C" and "D" . I was asking how did you measure distances A-B and C-D and also depth of the dish. What tools did you use?
Yes, life is tough ;)

hitting the " G " spot

Do you mean calculated or measured G-spot?

 

[Archive4]

OK, you asked, Milamber will answer, and I never mark my dishes, until above 3 litres of red wine I have a steady hand, so there is no need to mark them!

 

[Archive4]

Would not let me post the last one, here it is

 

[RimaNTSS]

@Milamber thanks for the pictures, I've seen them earlier. Could you also show how did you measure horizontal and vertical distentions of the working area of the dish? And also the depth in the point where lines are crossed each other?
On your first picture red dots are representing points "B" and "F"? Are you sure they are located there?!

 

[Archive4]

Depth at cross if effectively pic 7 on post 1 of pics, h and v dimensions were taken of the spare Laminas 1.8 I have, so just put the dish on the floor face up and took the measurements with a tape measure ( well under 3 litres of red )

 

[RimaNTSS]

h and v dimensions were taken of the spare Laminas 1.8 I have, so just put the dish on the floor face up and took the measurements with a tape measure ( well under 3 litres of red )

OK, that is understandable. And, for my knowlege, how did you measure vertical dimension of the working area so precisely if there is feedarm makes obstacle to do so. But, if feedarm was not installed than there would be a hole. So, I am interested how exactly did you mark points A, B, C and D on the face of the dish to be able to measure distances between them. And how did you find points C and D (as far as I understood there are no original markings from the factory)?

 

[Archive4]

OK, that is understandable. And, for my knowlege, how did you measure vertical dimension of the working area so precisely if there is feedarm makes obstacle to do so. But, if feedarm was not installed than there would be a hole. So, I am interested how exactly did you mark points A, B, C and D on the face of the dish to be able to measure distances between them. And how did you find points C and D (as far as I understood there are no original markings from the factory)?

OK, I´m slightly at a loss here as to what you mean. Time to go pictorial I guess, do a diagram of a b c d and I´ll try and answer.
Do not go down the road of E=MC2 as I´ve run out of toilet paper today!

 

[RimaNTSS]

do a diagram of a b c d and I´ll try and answer.
Do not go down the road of E=MC2 as I´ve run out of toilet paper today!

OK, thanks for not going bananas and being ready for constructive discussion ;). We will certainly not go E=MC2 here, just very simple and easy manipulations with ruler, pencil, piece of paper and brains
First of all "Working area of the dish" -WAD (I like abbreviations ) ,what a hell is that? In my understanding, WAD is an area of the dish which receives signals (electro-magnetic waves) from satellites and reflects them towards antenna's focal point- point F.
To find out where is WAD it is necessary to look closely to the edges of the dish (different dishes may have different construction of the edges, dependent on the process of manufacturing). I made this picture couple of days ago: Red line is parabola, blue line is the edge of the dish, and yellow line is oval which goes all around the dish and marks the WOD.
But whole diagram will look like this where you can see rhombus ABCD.
This is not so nice picture, as it is made on paper by me and @Trust1
And some pore pictures of the edges of WOD
And this one shows how to reconstruct missing point B on antenna

Perhaps more to follow, anyway it is raining today.

 

[a33]

I disagree!

Not to the G-spot, but to the statement that life is complicated.
If you accept that life is complicated and understand the complicatedness, it becomes simple again.

That's my motto ;) .

But now: back ontopic.

Greetz,
A33

 

[Archive4]

Laminas make it very easy yo see the edge of the WAD



And you don´t have to bend your best inox to see the bottom edge



" nice " dishes!

Will try and re-take the dimensions tomorrow ( for the third time )

 

[Lazarus]

...... before the Vino hour, if you please ;)

 

[Archive4]

...... before the Vino hour, if you please ;)

How the hell am I supposed to take measurements at 4 am while it´s still dark? As you know, in Spain, breakfast is a nice coffee, with large brandy

 

[Lazarus]

Good one, BP!

 

[Archive4]

Ok, using the 40 x 40 box tube I have carefully positioned said tube in the dead centre of the dish as pictured. Have carefully measured to the widest point to both sides. The box tube is exactly 1940 mm long as measured by Dave ( my welder ) and confirmed by me.
As you will see from the pics the height of the WAD is under 1940 by a few mm, so may be as big 1936 / 1937 mm. At widest point of dish it is 1800 ( 2 x 880 plus 40 mm ). However, by laying of the floor to get an exact measurement at the cross point ( just below the lock cut out ) the depth is only 166 mm, not 170 mm as previously stated, so I stand corrected. ( Once I got up from the floor )

Will re check measurements with said box tube and laser when have time, probably tomorrow, as have to go to friends BBQ this afternoon.

 

[RimaNTSS]

OK, thanks for that. When you do measurements tomorrow, please check also side of the rhombus ACBD where AC=AD=BC=BD.
All you, Lami 1,8m users should agree on major dimensions of this dish (I hope dishes are exactly the same). I made spreadsheet with needed data. By now I see more questions than definite answers.

 

[Archive4]

OK, will do, will also check depth again, just to be sure.