Welcome to TemiCity, today we will be explaining how to install satellite dish manually, some people call it tracking a satellite dish and connect it to your decoder.
In this post we will use one of the polar decoder you are familiar with, Strong Decoder, with MBC frequency on w3a as an example.
Let’s start by explaining what satellite dish is, a satellite dish is a parabolic antenna in dish shape design to receive microwave from communication satellite to transmit data transmissions or broadcasts, such as satellite television.
How a satellite dish work
A satellite dish work using schematic of reflection.
The parabolic shape of a dish is responsible for the reflection of
signal to dish focal point, mounted on the bracket of the dish focal point is the feedhorn.
The feedhorn is the front end of waveguide which gather signals
near or at the focal point to conduct them to low-noise block down converter or LNB.
The LNB is responsible for the conversion of the signal from electromagnetic or radio waves to electrical signal.
It also helps to shift the signals from the downlinked C-band and/ Ku- band to the L-band range.
LNBG is used by direct dish to integrate feedhorn with LNB.
The directive gain of a dish is to increase as frequency increase, while actual gain depend on so many factors such as;
- Surface finish
- Accuracy of shape
- Feedhorn matching
For exe, low frequencies, C-band dish designer have a wide choice of materials.
Satellite dish is constructed on a metal mesh on a metal framework because large size dish is required for lower frequency.
However, mesh design is rare for high frequency, some design use solid dish with perforations.
The Low-noise block/feedhorn (LNBF) receive signal directly from the atmosphere using the device at the front of the dish.
Modern home television dish use 43cm (18in) to 70cm (31 in) in diameter, fixed in one position for K-band reception from one orbital position.
Homes use a motorised C-band dish up to 3 metre in diameter for reception of channels from different satellite before the existence of direct broadcast satellite.
Rain and interference from adjacent often cause problem for small dish.
Types of Satellite dish
There are different types of satellite dish used all over the world, we will talk on some below,
This dish is mounted on a pole which is driven by a stepper motor or a servo. This dish can be control and rotate to face any satellite position in the sky.
Motor-driven dishes are very popular, there are three competing standards: DiSEqC, USALS, and 36v positioners.
Multi-satellite Special dish
Multi-satellite dish have up to 16 satellite position, Ku- band, some enables reception of server from multiple satellite position without you repositioning it.
The vertical axis of this dish operate as off-axis concave parabolic cassegrain reflector while the horizontal axis works as a concave convex cassegrain.
Using varying curvature, the spot of the main dish wander across the secondary to correct astigmatism.
The primary elliptic aperture is design to fit the deformed illumination by the horn.
This dish uses a very small aperture terminal (VSAT), it provide two way satellite internet communication for consumer and private network.
Most VSATs operate in Ku band as C band is restricted to populated region.
Move was made in 2005 to make new Ka band satellite to operate at higher frequency and offer greater performance at low cost.
Most antenna very from 74 to 120 cm and C band VSATs may be as large as 4m.
This dish is a reflector antenna, so anything that reflects radio frequency is usable as a reflector antenna.
So dustbin lids, woks and other items are used as dish.
It is easy to get usable signal on some of this dishes when it is coupled with higher transmission power of DTH satellite and low noise LNBs.
If you cannot afford the above satellite dishes, there are smaller that ranges between 90cm-60cm, MBC can be tracked with a 90cm dish.
How to Install Satellite TV System
Installing a satellite TV system can be done in two ways;
1 Installation of the satellite dish
2 Installation of the satellite decoder to receive the TV programming from your service provider.
Before installation you must have a satellite TV kits; satellite dish and mounting kit, high-grade RF coaxial cable and satellite decoder.
To get install a satellite decoder like Strong, what you need to do is below;
Connect your decoder to the mains
Then connect your lnb cable that comes from your dish
On your decoder’s remote controll, press menu>>installation>>manual search
Change the following values; Satellite: eutelsat w3a
Symbal rate: 30.000
The next thing to do is to manipulate your dish until the signal quality is green (at least 54% and above).
Many people want their dish to be install by a professional, but the
installation process is very easy, you only need a basic DIY skills.
The only difficulty is aiming the dish to get the best signal from the satellite, this step might need help by a professional.
Your dish most be placed to pick the signal of the satellite floating around in space.
Selecting the best location for your satellite dish is your first assignment, there are things you need to consider here, they include;
1 Locate a dztv dish near your area to have an idea of your East.
You should note that dstv is on Eutelsat w4/7.
You can track dstv multichoice africa on Eutelsat w4/7, do the following settings; 11940 H 27500, put your lnb at 9 0′clock.
2. After tracking the w4/7 hold your dish in place and input Sirius 4 frequency 12605 V 29950.
Lift your dish to face the sky and down while moving slowly to the left of the dish.
Immediately you get Sirius 4 input 12728 V 30000, for w3a and w3a, then bring your dish down slightly back to your right a little.
That’s all on how to install a dish manually.