₦airaland Forum

OMG!... that was a nice one,..lmao! the DAD, obviously is a clown to the entire family members,.. I can read the love they all share too..

@Swordswifter...

..really,... I feel highly honored and good,... we are looking forward to your big bombshell you are about to drop... don't say I am letting the cat out of the bag... lol !,... I will have up the explanation as regards the analysis of the DEVELOPMENT drawing for your sectionalised ANTENNA ... ''in the oven'',...I have being trying to see how to break it down for easy assimilation for all,... don't worry,.. it is going to be pretty soon,.. I must confess,. I feel proud to see you gone that far...

okoegualek: Can I get d size of my dish from d radius of the dish,I av a big off which I don't know d size,whether 1.8m,2m,3m etc

put a tape to the edge of your dish with the face up, (reflective surface).. you might need the assistance of a second person though, to hold the tape to the edge and you pull out the reel to take measurement at the opposite end.
Now, you need to move your hand that holds the tape to the dish edge left and right while the other guy remains stationary., during your movement you pick the highest value recorded as your dish size,

... if it was possible to demystify OSHODI rowdiness, then,...?!

andysaeed: ok...i bought foil for work.
is it just for separeting the dish (fiber) form mould? or it must be sticked at dish?

IT DEFINITELY MUST STICK TO THE DISH !!!,.. IT, AT THE SAME TIME, SEPARATES THE DISH FROM THE MOULD. IT IS YOUR REFLECTOR OF THE SIGNAL WAVES, WHICH SENDS THE REFLECTED WAVES TO THE FOCUS WHERE THE LNBF IS LOCATED IN A CONVERGED FORM.

andysaeed: yes i use concrete.
idont know as you said Foil...whats a foil? do i need some thing execpt fibber matte and other 3 compnent ...
when i bouyght them i see just 3 component
resing 5 kg
fibber 1kg
alittle of catalizur(if im not wrong)
here the pictures...
up is maybe catalizor..
down is resing( may be costumer have mixed with accelerator..i dont know)

'' FOIL'' is the aluminum thin layer of metal that reflects the on coming electromagnetic waves ''signals'' form the outer spaces. without the foil , you dish is as good as a perforated basket intended to contain water. Aluminum foil is sold in the market as cooking foil, the ''flour sellers, for baking (bread&cake are selling this in AGEGE market.
As for the posted pix; what you have on top is CATALYST, the one at the bottom in a bigger container with purple color is ACCELERATOR, in some cases the manufacturing companies have the accelerator and resin premixed so that all what you have to do is add catalyst to initiate the chemical reaction, ''CURING'' if what you have in the bigger plastic bottle is a mixture of resin and catalyst, it would have the density of resin which is fairly denser, ''thicker'' viscous. but if it is a lighter liquid with purple color, it means what you have is only accelerator. Resin in its pure forms come in slightly frosted whitish appearance, and sometimes it assumes the color of vegetable oil, ''ORORO''... clear, but denser, ''thicker'' than all other liquid components involved.

HINT;
***THE FIBER MATTE YOU HAVE IN THE PICTURE IS 450G GRADE, I PRESUME THIS MEANS THE WEIGHT ONE METER LENGTH OF THIS MATERIAL WEIGHS.***

andysaeed: Thanks for the reply., I have some pictures of the work done as soon as I put them on the site. Maybe you can help me. Unfortunately I still obscure.
Now there are three questions in my mind.
A: About the sticking layer on the mold surface. First, we put a layer of resin on the mold surface and then put fiber Mtte and then Put the resin for second time on the fibber.. Means that the fiber is placed between two layers of resin. Did I understand correctly?
(B). Concern about the number of layers is still not resolved to me. Actually more expensive for two layer is the one of reason, . but principal reason is that I doubt whether it is sutable just one layer for firm and accuarcy of the pipe that holding the lnb.it means may be one layer will not be so firm than can take the press and weight of the pipes and lnb .and i dont want put holder pipes on the back of the dish like you cos i designed a 1.6 m sized dish.!
c.For example, if I want to put three layer of fibber do I need three times of resin?
tanx...

IF I AM NOT MISTAKING, THE MATTE TYPE YOU ARE HOLDING IS 450g ''GRADE'', sorry I forgot name for its type but, I am pretty sure its not ''emosion'', BUT ALL TYPES OF MATTE ARE GOOD FOR THE JOB. I ADVISE, IF YOU ARE GOING FOR MULTI-LAYER APPLICATION, LOOK FOR 300g GRADE, RIGHT NOW, LETS HOLD ON TO WHAT YOU HAVE. THE 450g FIBER MATTE. I PRESUME YOU ARE CASTING ON A CONCRETE MOULD,. RIGHT ?!... YOU NEED A FIRST RESIN COATING OF RESIN, THAT CONTAINS NO ''CATALYST'' AND ''ACCELERATOR'' THIS WILL BE THE BASE FOR YOUR LAYER OF ALUMINUM FOIL ''REFLECTOR''...IT WILL HOLD THE FOIL TO THE MOULD WHILE YOU SPREAD THE LAYER OF MATTE ONTO IT, THEN YOU APPLY RESIN LACED WITH CATALYST AND ACCELERATOR ON THE LAID MATTE AND WAIT FOR CURING... WITH THE TYPE OF MATTE YOU ARE HOLDING IN THE PICTURE, ONE LAYER , THAT IS; ONE COATING IS ENOUGH. THEN YOU CAN PLACE YOUR STEEL FRAME AND CUT STRIPS OF MATTE THAT COVER THE FRAMES, RIBS, THEN APPLY MIXTURE OF RESIN, CATALYST AND ACCELERATOR ON THE MATTE STRIPS TO HOLD DOWN THE STEEL FRAMES AND ALLOW FOR CURING... THE FIRST LAYER OF RESIN THAT STANDS BETWEEN THE MOULD AND THE ALUMINUM FOIL SERVES AS THE SEPARATOR OF YOUR CAST DISH FROM THE MOULD,.. THE DISH REMOVES FROM THE MOULD WITHOUT STICKING TO IT, AFTER CURING,... THEN , THIS IS WHERE YOU WITNESS THE FIRST BEAUTY OF YOUR HANDWORK, THE NEXT IS CONFIRMING THE EFFICIENCY OF YOUR DISH , WHICH IS A FUNCTION OF THE MOULD... THIS RESULT YOU OBTAIN BY TESTING YOU PRODUCTION,.. THE DISH.

dshiznitplata: Go for the Suzuki Timny....check it out 1st..

hey, you bought your car already ?... didn't hear a thing anymore ...! like to know which car you ended up with though !,.. just curious

andysaeed: hi friends pl may want somebody anwser me this:
how many layers fiber glass must be appleyd for 2meter dish...

Whatever is the size of your dish, you could make it any numbers of layer,.. what is of most paramount importance is the thickness of the fiber matte used and how many laminates you want, which is a function of your intended design, for instance, if you wish to have your reflector embedded in the layers of matte. Also, it should be established that the mould you are casting on has a proven integrity of effectiveness. so that you wont have to invest on a vague application. bare in mind the assumed weight of your dish, and the desired strength to withstand wind load after installation,
let me know if there is something else you wish to know... sorry for the late response,.. I replied your mail.

andysaeed: tanx so much for kindness.
first question i have.is about depth of dish.(x)
for using c baND AND KU BAND..whats the diffrent?.
can we use a dish with c band-size for ku-band using?

@andysaeed,
the depth is one of the critical factors that have influence on the dish performance based on signals, to be received, orientations... it takes its description from a factor called F/D ratio...Ku-Band is most sensitive to this factor, as per your question,..over time , dish designers have been able to come to a mid point for both Ku and C bands F/D ratio... the factor adopted being F/D = 0.4, this value is most favorable for both bands. this is also the factor that describes the dish depth and shallowness... you could, as a matter of fact, size up your dish depth before fabrication.
but in actual fact, a shallower dish is more favorable to KU BAND than C-band.
you can conveniently use a dish meant for C-band for Ku-band, but not vice-versa..
I hope I am able to answer your question to some extent.

Hello, @ Andysaeed,
you don't need any furnace (equipment) for molding, try and read through the previous threads and you will see that all needed were already discussed, there could be a few itches that you might need to untwined, fine, but then, you must have learnt one or two things along the line,...feel free to ask any forms of question... reading through the thread would enable you see what and what problems individuals like you have encountered while trailing same adventure,... it is interesting, just take a little time to go through a few lines and the whole idea is yours... best of luck !!!
I am pretty sure the whole house is waiting to welcome your outcomes..

[quote author=Nice-Kid]This is a case of identical twins whose cell division process (mitosis) did not scale through. It's either the parents take him to a specialist hospital where they old surgically remove the less-developed head & neck for the other one to survive, or they may just leave the baby (babies) that way. That means they would be eating what they like and saying what they like, separately.[/quote]This seems the most intelligent of all, no kiddin', especially, for those that have basic biological courses background,...we are talking about cell multiplication here, which could either be through divisions called, mitosis or meosis ( dont know if i got the spelling right )..in the case of the seamis twins...there must have been an accident that resulted in in-completion of the process which results to formation of seamis twins,..

@ Ajillo,.. those pictures are quite educative,. as per religion,.. don't wanna talk about it,.. lol !!!...

pufectskin: I drive an Avalon now, but its not mine and sometimes a humongous suv and
peeps look at me like who is d skinny little chic in dese cars.
I am lookin to buy an SUV cos of d awful conditions of Nigerian roads,
but what suv can a 5ft6 56kg weighing girl like me buy that wouldn't look too huge?

Thanks in advance!

I present LAREDO JEEP, to me is kinda unisex,...well, the body style from '05 and forth,.. you could just check it out,...
...looks sweet to me

yeah well,.. donno, but the ''AGE & STYLE'',.are somehow kinda issue sometimes,...but if you ask me,...its not about the age of a CAR,.. IT'S sometimes the style and milage,.. for example,..I used to drive a 4runner,...''LIMITED edition'' for the particular bod style,. I fell in love with the machine and all other body styles, ''LATEST'' became ODD to me,...look out for an appealing style of your chosen brand and go for low MILAGE, that if you are not going for a new one,.. you know what I am saying,.?. that's what I do most-times,... It saves me money and I still have ma ride always ready to go, having low MILEAGE in mind ,...lol !;.SORRY, THIS SOUNDS KINDA ENGINEERING BUT BETTER FOR NIGERIA PARAMETERS,.. FROM ALL PERSPECTIVES,.. I COULD BE WRONG THOUGH !... I know some ppl place AESTHETIC above EFFICIENCY.. !!! for some good reasons...I know ..

HONDA ELEMENT WOULD JUST PERFECT,,!!!..THEN MIND YOU, YOU ARE NOT SMALL,.. YOU MIGHT NOT CARRY EXCESS FLESH,.. YOU HEIGHT IS ALMOST THAT OF QUEEN LATIFAH,...6FT10''... SO,..I GUESS NO ONE WOULD SAY SHE IS SMALL,.. LOL,.. I AM USING QUEEN LATIFAH AS AN EXAMPLE because SHE IS KNOWN TO ALMOST ALL,..AT LEAST FOR HEIGHT...

in proving = improving ,.. sorry for the earlier typographical error ...

I am of the opinion that we should progress in our bids to reject frustrations in the face of oppression presented to us by the so called SATELLITE TV PROGRAM providers and thwart the objectives & aims of the collaboration of our leaders with these so called satellite providers,....A lot of us aim the ''birds'' many ventured into other diverse side of this objective,.. (software aspect).. but I have the feelings that little has been done to put into practice the lesson learned so far to improve the main ingredient of our practice... building super active launchers 'DISHES' and , as for me, I expected improvements over what we have had for too long...BUD is our sole and primary weapon in this arena, and yet we did not think about how to summon the obstacles we face all along,.. come to think of it,.. the transportation issue remained a burden b4 i left home,.. have we discussed how do we get BUD petallised ?... no... LADIES AND 'GENTLEMEN'... LET US DISCUSS PETALLISING THE BUD, [ BIG UGLY DISH ] ...I wanna see who is gonna belt the cat... I am waiting..

THE FOLLOWINGS ARE THE PROBLEMS I THINK WE NEED TO ADDRESS;

-Improving an average BUD gain per surface area
-Eliminating need for re-foiling
-Can BUD assume a better appearance,?(aesthetic) .. so its name could be changed ,.. lol !

If anybody thinks there are more suggestions on this issue, should plz, bring them forth for discussion...

Thank you all...

I did not, motorize it ,

@Iron2011'

No, I did not motorized it ,

@Iron2011,

Honestly, I can not quote exact quantity of materials I used for that "MONSTER" pardon my language, because it was the first and the last of it I fabricated, but its not difficult to figure out, I will try and make a rough calculation from what material quantity I expended on other sizes and then deduce a figure for it,, that is about how you predict what quantity of material needed for your new challenge in the field of fabrication , putting some other little variations in detail into consideration,

please , you have to be a little patient with me on this,, better still, if we have somebody who has fabricated any sizes before, obtain the details and set for evaluation in surface area, i will suggest, what ever you get multiply by a factor of 1.5. , this goes for further [thickness] reinforcement and metallic frame concealment, , the same i suggest for fiber matte as well,

@bamboutos,

RUNNING AWAY FROM GROUND NOISE, ?. , YES ! OFF-SET DISH IS THE BEST ?

@bamboutos,
you are so poetic,, lol !,
1]. well, the trick is this, when you are running away from ground noise,. you choose a design that tends to aim your bird at a seemingly indirect targeting, and this is achieved by employing off-set style of design. i will not recommend an F/D ratio greater than 0.43 for a prime focusing dish, because of the associated magnification of errors that tend to abound during mold construction, it is achievable, but requires tremendous expertise.!!! now a way out is when you are designing a dish to have larger F/D ratio, you first of all go for a mother mold of about double the size of your determined size and about half the F/D ratio of the it. then you describe/derive the off-set mold from it, to cast your off-set dish; by this ; your resulting DISH WOULD HAVE EVERYTHING IN COMMON WITH THE MOTHER EXCEPT IN SIZE, and its targeting angle is off-set, thus, you have a dish that looks 'slightly above the elevation angle' of your BIRD, hence, escaping noise from the ground, and having larger FD ratio. (so, I say, the dish orientation SHIES away from the ground noise),

2]. then, what are you looking for getting BIRDS away from CLARKE'S BELT, , lol ! to my knowledge, all birds, for TV, are arranged on this imaginary line, clarke's belt for TVRO operation to obtain geostationary positions and all that. any birds (above) or below CLARK belt are meant for other communication purposes, like spying mapping and tracking stuff,, lol ! ok ? then, they have relative movement when desired just like when you move your camera lense for better image,

plz, if I have not answered your question, let me know,

it's better you re-foil not to have to duplicate effort,, the better the foiling the better the signal reception, ? i suggest you wait until you are cashed up,

@RAY1251,
you might have to remove the entire surface covering and replace with another one,, this involves some technical expertise , handling the application of aluminum foil,, this process requires initial application of a mixture of resin and catalyst with accelerator,, after the foiling then follows the application of paint,, grey is the best,,

@IRON
welcome back geometry



THANK YOU

@ironman,
thanx

@Ray1251,
1]. what material is your dish made up of,, and 2]. what is the condition of the surface right now 3]. have you gone through the entire thread to see various contributions people have added to aid your fixing this kind of challenge, ? its all up in the thread !!!, welcome to the house ,,

and fiber-glass [dish] at that.

There is limitation to how far your mesh dish can reach, no matter how big,, as per the price,, I wont really know how much it costs now, if you actually in for free -to-air,, I suggest dish that motorizes,

@Obnelly,
Thank you,, sorry, i'm still far away, lol !

In addition, make sure your surface is smooth and free of dirt 'dust' before application,, yeah

@Robertsche,
You have a great mind to have come up with such question,, and I must confess, this is the most challenging question that I have to answer throughout my carrier as a parabolic expert !,, technically, you reason the way I did during one experiment I carried out in a bid to improve reflecting surface of satellite antenna, but , there was a challenge,, I did not come across an authentic metallic paint, ! ALUMINUM METALLIC PAINT ,!!!, SHOULD ANSWER THIS QUESTION.
I tried to know what ALUMINUM PAINT was made up of,, the structural make up of original ALUMINUM paint says it all that it is the answer to this question,
at microscopic level,, it consists of several particles of aluminum metal swimming in the medium of volatile liquid and resin binder.
the yolatile liquid evaporates off and leaves the binder 'resin' glueing the metal particles together after application on a given surface, the particle are in leaf form and they over lapse each other forming a kindda of protection on the surface they are being applied, I suggest several coatings to eliminate minor voids that could amount to porosity as far as electromagnetic waves are concerned. Now, lets get back to MACRO explanation of the process,, the leaves of aluminum particle are invincible to the ordinary eyes,, so, when viewed collectively, they appear smooth and beautiful,, shinning , so to say. this should be good enough for your electromagnetic wave reflection, and BANG ! you are there ,
HINT; when I did this, I did not receive signal, because, I bought an aluminum paint that has more of binder than the metalic aluniminum particles 'leaves' but the client was on my neck, so I had to rush up, and replace with the aluminum foil,

conclussion;
a good aluminum paint [original,, good quality] would serve this purpose,, I am sure 100%
Thank you .