echo 1
Satellite technology uses a transponder to receive sings and then transfer them to satellites in other locations. They are used for purposes of space satellites and GPS.
The first communications satellite was named Echo 1. It was launched by NASA in 1960 and was a passive satellite that reflected signals back to Earth to demonstrate the feasibility of using satellites for long-distance communications.
The first US communications satellite to amplify radio and TV signals was called Echo 1. It was launched on August 12, 1960, and was a passive communications satellite that reflected signals rather than amplifying them.
In passive satellite system the ground transmitting system power at the reflector. The receiving ground system received a function of the power that has been intercepted by the reflector. In active satellite received the function of the energy band toward it by the ground transmitter system and the received power is active amplitude by active electronic means.
The first weather satellite was invented in the United States. The TIROS-1 (Television Infrared Observation Satellite) was launched by NASA in 1960 and was the first satellite to successfully transmit weather images from space.
Satellite technology uses a transponder to receive sings and then transfer them to satellites in other locations. They are used for purposes of space satellites and GPS.
The first communications satellite was named Echo 1. It was launched by NASA in 1960 and was a passive satellite that reflected signals back to Earth to demonstrate the feasibility of using satellites for long-distance communications.
A Ford Passive Anti Theft System computer chip car key
The satellite transponder typically works in either the C-band (4-8GHz) or the Ku-band (12-18GHz) and these are for the downlink (from the satellite to the earth station).
The first US communications satellite to amplify radio and TV signals was called Echo 1. It was launched on August 12, 1960, and was a passive communications satellite that reflected signals rather than amplifying them.
It is an electronic device on board a geostat satellite to receive uplink data and picture bits,amplifying it before converting it to a downlink freqency bit stream and sending it down to earth.
An active satellite acts as a REPEATER; it amplifies signals received and then retransmits them back to earth. This increases signal strength at the receiving terminal to a higher level than would be available from a passive satellite. A passive satellite only reflects received radio signals back to earth. fr0m: ZIA UR REHMAN D-05-ES-29 DCET Karachi Pakistan.
active satellites are receives the transmitted signal from earth ,amplify the signal and transmit it. it is also called as transponders. but passive satellites just receive and transmit the signal.itac as the reflector
downlink
A satellite that simply reflects light or radio waves transmitted from one ground station to another without any amplification or retransmission.
check out lyngsat.com for a list of sats transponders channels and frequencies
In passive satellite system the ground transmitting system power at the reflector. The receiving ground system received a function of the power that has been intercepted by the reflector. In active satellite received the function of the energy band toward it by the ground transmitter system and the received power is active amplitude by active electronic means.