PRESENTATION ON BROADCASTING IN DOORDARSHAN Doordarshan is a public broadcast terrestrial Channel run by Prasarbharati. Doordarshan Kendra, Silchar was inaugurated on the 11th AUG. 1998. Doordarshan Kendra Allahabad has an up-linking frequency of 5950 MHz and downlinking frequency of 3725 MHz. INSAT-4B,Location 93.5° east.

1. PRESENTATION ON BROADCASTING
IN
DOORDARSHAN
SATYAM SHIVAM SUNDRAM
TRAINING FROM:
DOORDARSHAN KENDRA,
(LUCKNOW)
PRESENTED BY:
ROHIT KUMAR
111040
ECE 4th YEAR

2.  INTRODUCTION
 STUDIO
 TELEVISION LIGHTING
 ACOUSTIC SYSTEM
 CAMERA
 TRANSMITTER
 EARTH STATION
 THE PROCESS OF TRANSMISSION
 REFERENCES

3.  Doordarshan is a public broadcast
terrestrial Channel run by Prasarbharati.
 Doordarshan Kendra, Silchar was
inaugurated on the 11th AUG. 1998.
 Doordarshan Kendra Allahabad has up
linking frequency 5950 MHz and
downlinking frequency 3725 MHz.
 INSAT-4B,Location 93.5° east.

4.  Doordarshan have their own shooting
studio and studio hall is used to shoot
various programmes.
 Studio hall contains many devices for
shooting. Like lighting , microphone,
makeup room, Furniture, Cameras and
sound absorbers.
 DD Allahabad produce their own
programmes like “Jeevan Sandhya”
in this studio.

5. I. Studio A (Main)
II. Studio B (News)
 In studio A is required four cameras.
 Studio A is use for recording of programmes
and other activities.
 In studio B is required two cameras.
 Studio B is use for News recording &
regional transmission.

6. MAIN

7. SET OF STUDIO B
(NEWS)

8.  A Doordarshan studio has three basic lights
 Key light – This is the principal light source
of illumination. It is hard light which provides
shining on the front part of objects.
 Fill light – It controls the lighting contrast by
filling in shadows.
 Back light – It separate the objects from the
background .

10. It is derived from a Greek word akoustos which
means “hearing”.
It is use to prevent sounds from it’s echo.
In doordarshan studio , all the sound must have to
be done Acoustic treatment to preserve the
originality of the sound along with extending
maximum pleasure to the listener.

11.  A TV camera consist of three section.
I. Optical part - To form optical image.
II. Transducer - To convert optical image in
to electrical signal.
III. Electronic part - To process output of a
transducer to get a ccvs (colour
composit video signal).

12. 3CCD
CAMERA

13.  In doordarshan Kendra Allahabad VHF
Solid State NEC(JAPAN) TV transmitter
is used.
 It is a digital transmitter.
 Its power rating is 10 kw.
 The main parts of the transmitter are
I. EXCITER.
II. AMPLIFIER

14. TRANSMITTER

15.  Earth Station is the unit from where
programme signal is sent to the satellite
(uplink) and Programme signal transmitted by
the satellite is received at the earth station
(downlink).
 DDK Lucknow has channel 5 and channel 11.
 For channel 5 (i.e. DD-NATIONAL) visual
frequency is 175.25 MHz and aural frequency
is 180.75 MHz.
 For channel 11(i.e. DD-NEWS) visual
frequency is 217.25 MHz and aural frequency
is 222.75 MHz.

16. EARTH
STA
TION TANSMITTER/RECEIVER
DTH
RECEIVER
DOWNLINKING
UPLINKING
THE PROCESS OF
TRANSMISSION
SATELLITE
TV
1

17.  http//www.doordarshan.com
 Text material from DDK
 LUCKNOW