|Ed-Lab Model CES 230 - Satellite Communication
CES Satellite System - CES 230 is composed of three
components, a Transmitter Station, a Receiver Station, and the
This system is used
to demonstrate the concept of Telecommunication System.
sends a signal to the Satellite which is amplified and transmitted
back to the receiving station.
The signal is transmitted by varying
the intensity of a light beam. An experiment manual is in this package.
The CES Satellite consists of flashlight, phototransistor, and receiving
antenna dish, and electronic circuitry.
The light received by the
phototransistor varies the circuit voltage and
is used to increase
the input voltage to level which is suitable to modulate
beam. The students will build their own satellite housing.
The CES Transmitter Station consists of flashlight mounted on a printed
circuit board with several switches and cassette recorder. When the
unit is plugged into an AC outlet and power is turned ON the flashlight
will glow with a modulating intensity dependent on the Audio signals.
The CES Receiver Station consists of satellite receiving dish, phototransistor,
loudspeaker, and an audio amplifier on another printed circuit
card. To receive a signal, the satellite dish must be pointed towards
the light source on the satellite. When the receiver is properly
aligned, the audio signal transmitted will be reproduced and heard
over the loundspeaker.
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