Broadcasting final
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This document provides an overview of broadcasting via terrestrial transmission and satellite transmission. Terrestrial transmission uses frequencies between 40-70 MHz and can transmit signals up to 100 km. Satellite transmission involves geostationary satellites orbiting 35,786 km above Earth that receive and transmit signals, allowing coverage of large areas ignoring political boundaries. Key benefits of satellite communication include remote sensing for conditions like weather as well as communication with aircraft and remote areas.
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Broadcasting final
- 2. BROADCASTING • ANALOG CABLE T.V. TRANSMISSION
- 3. TELEVISION TRANSMISSION • TERRESTRIAL TRANSMISSION. • SATELLITE TRANSMISSION.
- 4. TERRESTRIAL TRANSMISSION TERRESTRIAL TRANSMISSION is the transmission being made parallel to the ground It’s frequency range is 40-70 MHz One transmitting station could transmit the signal for only 100 Km diameter of clients (Tx station)
- 5. SATELLITE TRANSMISSION Satellite transmission involves an intermediate machine what we called as satellite. It’s sole duty is receiving and transmitting. The most popular orbit is the Geostationary orbit for the communication satellite . Which is present at 35786 Km from the earth surface. Only three satellites are used to cover the earth. SATELLITE INFORMATION :-
- 6. A B C
- 7. IMPORTANT FEATURES Very large area of earth is visible from satellite (about 42%) Satellite offers communication with remote communities in sparsely populated area Satellite communication ignores political boundaries as well as geographical boundaries Satellite provides communications with moving aircraft from ground control stations across the country Satellite provides remote sensing i.e. Weather condition , oil field, water pollution etc.
- 8. SATELLITE LOCATION LAUNCH YEAR INSAT 2A 74’ E 1992 INSAT 2B 93.5’ E 1993 INSAT 2C 93.5’ E 1995 INSAT 2D 74’ E 1997 INSAT 2E 83’ E 1995 INSAT 3B 83’ E 2000 INSAT 3C 74’ E 2002 INSAT 3A 93.5’ E 2003 INSAT 3D 93.5’ E 2003 INSAT 3E 55’ E 2003 GSAT 1 48’ E 2001 GSAT 2 48’ E 2003 GSAT 3 74’ E 2004 GSAT 4 48’ E 2006
- 9. SATELLITE
- 10. UPLINK UPLINK is the process of sending the signal from the main station to the satellite 5.9 TO 6.2 GHz TO SATELLITE
- 11. LNB DETAILS LNB is connected at the receiving satellite dish. LNB is used just to convert incoming RF input to IF (intermediate frequency)
- 12. An Over View of S, C, Ku, & Ka Band Frequencies BAND DESIGNATION DOWNLINK FREQ(GHz) UP-LINK FREQ (GHz) S BAND 2.555 to 2.635 5.855 to 5.935 EXTENDED C BAND(LOWER) 3.4 to 3.7 5.725 to 5.925 C BAND 3.7 to 4.2 5.925 to 6.425 EXTENDED C BAND(UPPER) 4.5 to 4.8 6.425 to 7.075 Ku BAND 10.7 to 13.25 12.75 to 14.25 Ka BAND 18.3 to 22.20 27.0 to 31.00
- 13. THANK YOU