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September 2007

Q.1 : Question: I watch different satellite channels, including news and entertainment. Kindly tell me what is the difference between C-Band and Ku-Band system? (Wajid Ali Shah, Gilgut)

Ans: C-band is transmitting at a lower frequency (4 MHz), while Ku band transmits at 11 to 12 GHz. C band is more commonly used in the United States and for international transmission, whereas Ku-band is the standard in Europe. C-band dishes usually come with a larger size than Ku-band satellite antennas. Apart from having different sizes, the C-Band system is offering different programmes. Please be informed that most of these extra programmes might not be of interest to you since they are in foreign languages.

Q.2 : I want to see the same programmes and channels I have at home on my DirecTV system when I go on vacation. If I have a dish on my vacation home in Brazil, can I bring my receiver with me and hook it up there to get the same programming as I have at home? (Dominique, Braziil)

Ans: No, because the satellites that broadcast Directv's signals only point towards the USA. It bleeds a little into border areas of Canada and Mexico, but no way would it reach South America.

Q.3 : I have a blue screen with a banner at the bottom telling what is on but no picture. What should I do? (Zafar Hakim, Karachi)

Ans: This is caused by a software jam. You need to disconnect the electricity supply from the digital satellite receiver (check that the light has gone out on the box) wait for one minute and re-connect. Switch the box back on and it will say 'Searching for Listings' on the screen. Once it has loaded the programmes you will be able to operate as normal. This would indicate that the scart lead has come loose. Check the connection from the back of the digibox and the one that goes into the television.

Q.4 : Channels polarity Question: : What if all of the channels of the same polarity are snowy or wrong pictures on a satellite and on a neighboring satellite the opposite channels are snowy or wrong pictures? (Example: On G5 all the odd channels are out and evens are in and on F3 all the odd channels are in and evens are out.) (Arif Aziz, Lahore)

Ans: Polarity refers to like channels on a satellite such as all odd channels or all even channels. If the wires on the back of the satellite receiver are accessible, check those that connect to the polarizer terminals. They may also be called polarity or servo terminals. The polarity wires are usually Red, Black, and White (or Clear).

Q.5 : What is Terrestrial Interference (TI) and how does it affect my system? What can be done about it? (Adnan Jaan, Balochistan)

Ans: Terrestrial Interference is anything operating on a microwave transmission which is the same as your satellite receives. Depending on the severity of the Terrestrial Interference , your screen may be totally snowy or wavy, or you may see "sparkles" in bright or dark colors on your picture. Terrestrial Interference may not affect every channel. It may only be apparent at certain times of the day. Various types of Terrestrial Interference filters are available and may help eliminate the problem.

Q.6 : All of my satellite channels are snowy and tuning east/west does not help like it usually does. What is the problem? (Masood Ansari, Abbotabad)

Ans: If the dish outside is not pointing directly at each satellite, then east/west tuning will not help. The dish needs to be realigned or adjusted.


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