The compression standards used for broadcasting DTH signals are of two types: Ku band- This band is comprised of Digital signals in the 12 to 18 GHz frequency range used for Direct to Home (DTH) broadcast and requires much smaller dish antenna (2 to 4 feet) to receive the more focused signals but is susceptible to outages during bad weather conditions like heavy rains.C band- This band is comprised of Analogue or Digital signals in the 4 to 8 GHz frequency range used for Television Receive Only (TVRO) broadcast and requires larger size of dish antenna (6 to 8 feet) to receive the signals and is not effected by bad weather conditions like rain. Satellite Television signals are beamed in two types of bands: broadcast encrypted signals which are decrypted based on information in the chip of your smart card. Broadcast signals may or may not be encrypted, in India DD Free dish broadcasts unencrypted signals which can be decoded by generic set top boxes while commercial operators like Tata sky, Videocon DTH, Dish TV etc. Receivers can be external set-top boxes, or a built-in television tuner.
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January 2023
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