- Ku band satellite dishes usually range
anywhere between 18 inches (40cm) to 1.2m (48 inch). Most Free To
Air FTA dishes are Ku band. C band satellite dishes can also be
used for FTA. C band dishes are are larger in size. Usually
1.8 meters | 6 feet and larger. C band dishes are usually prime
focus. With a Ku band LNB specially designed for a C band dish,
you can use a C band dish to pick up a Ku band signal.
What is the difference between a prime focal dish and an offset satellite dish?The difference between the offset satellite dish and prime focal (prime focus) dish is the way the signal reflects from the surface and where it gets concentrated.
Prime Focus Dishes, the signal reflects from the satellite dish and concentrates towards the center, where the LNB is mounted to catch the signal.
Offset Dishes are designed with an offset angle. Usually set at 21-degrees. With this design, the signal reflects from the dish and concentrates towards the bottom of the satellite dish instead of the center of the satellite dish. See the pictures below:
Prime Focus Dish 
Offset Dish What size dishes are available?In most cases, there are standard size satellite dishes. See the chart below:
1 centimeter = 0.393700787 inch
Size in INCH
|
Size in Metric
|
45cm
Dish
|
18
Inch | 18" Dish
|
60cm
Dish
|
24
Inch | 24" Dish
|
75cm
Dish
|
30
Inch | 30" Dish
|
80cm
Dish
|
31.5
Inch* | 31.5"* Dish
|
90cm
Dish
|
36
Inch | 36" Dish
|
100cm
| 1m Dish
|
39
Inch | 39" Dish
|
120cm
| 1.2m Dish
|
47
Inch | 47" Dish
|
*Because of marketing, some dish manufacturers and distributors
advertise an 80cm dish as a 33" dish rather than a 31" dish
What size is the LNB holder | clamp that comes with the dishes and are they standard?
The standard size for offset dish lnb bracket | clamp is 40mm
 |
| LNB BRACKET |
LNB Ku-Band
Motorized Dish
What satellite motor do you have available for offset dishes?
We carry a few different type of HH motors for offset Ku band satellite dishes. Go here for our satellite motor section.- Can you use a dish motor with a Prime-Focus satellite dish?
- Yes. They are called actuator arms. You can not use an HH mount. An HH mount or DiSEqC1.2 motor is used only for offset satellite dishes and not prime focus.
