Satellite TV systems have revolutionized home entertainment, offering a wide array of channels and services. This article delves into the two primary types of satellite TV systems: TVRO (TeleVision Receive Only) and DBS (Direct Broadcast Satellite). We'll explore their differences, functionalities, and the unique advantages each system offers.
TVRO was the pioneering satellite system for home satellite TV viewing. It required a relatively large dish, typically ranging from 3 to 6 feet in diameter, and operated in the C-Band frequency range.
C-Band frequencies are around 4 GHz, necessitating larger dishes due to their longer wavelengths. In contrast, Ku-Band frequencies, which range from 12 to 14 GHz, require much smaller dishes, often about 18 inches in diameter.
TVRO systems necessitate a movable dish to capture channels from multiple satellites. C-Band satellites offer fewer channels compared to Ku-Band satellites, thus requiring access to more satellites to provide a comprehensive range of channels.
One of the standout features of TVRO systems is their ability to receive free channels and independent feeds, such as unedited material broadcasted by news companies. These feeds are often not scrambled and can be accessed by anyone with the appropriate equipment.
TVRO systems are often referred to as:
DBS systems operate in the Ku-Band frequency range, which allows for higher power signal transmission and the use of much smaller dishes, typically around 18 inches in diameter.
The higher frequencies of Ku-Band satellites enable the use of smaller dishes, making it feasible to install satellite TV even in apartments on higher floors, provided there is a clear line of sight to the south.
DBS systems are designed for widespread use. The small dish size eliminates the obstacles associated with larger TVRO dishes. Once installed, the dish requires no maintenance as it is aimed at a single satellite. Some dishes are equipped with multiple feeds, allowing them to receive signals from more than one satellite.
Unlike TVRO systems, DBS satellites do not offer free channels. These satellites are typically owned and operated by satellite TV providers, who use them exclusively for their services. TVRO satellites, on the other hand, are often rented out for specific periods, making them suitable for tasks like transporting unedited materials across continents.
DBS systems are user-friendly and cost-effective. Installation is often free and straightforward, requiring only basic knowledge of satellite positioning. A qualified installer can align the dish for optimal reception within minutes.
Both TVRO and DBS systems have their unique advantages and serve different needs. TVRO systems offer access to a variety of free and independent channels, while DBS systems provide a more user-friendly and maintenance-free experience. Understanding these differences can help consumers make informed decisions about their satellite TV options.
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