Draw a schematic diagram showing the (i) ground wave (ii) sky wave and

CBSE Class 12
1

Draw a schematic diagram showing the
(i) ground wave
(ii) sky wave and
(iii) space wave propagation modes for em waves.
Write the frequency range for each of the following:
(i) Standard AM broadcast
(ii) Television
(iii) Satellite communication

2

Diagram showing the
(i) ground wave
(ii) sky wave and
(iii) space wave propagation modes for em waves:
image
Frequency range:
(i) Standard AM broadcast: 540-1600 kHz
(ii) Television: 54-72 MHz: VHF (very high frequencies)
76-88 MHz: VHF (very high frequencies)
174-216 MHz: UHF (ultra high frequencies)
420-890 MHz : UHF (ultra high frequencies)
(iii) Satellite communication: 5.925-6.425 GHz (up link)
3.7 - 4.2 GHz (down link)