Communication systems uplink and downlink frequency please watch.
Uplink and downlink frequency range in satellite communication.
To prevent interferance caused by multiple sites transmitting on the same frequencies government agencies and standards organizations around the globe try to keep the usage organized and often such controls take the form of government regulations which carry the weight.
In satellite telecommunication a downlink is the link from a satellite down to one or more ground stations or receivers and an uplink is the link from a ground station up to a satellite.
Ku band satellite will have 14 to 14 5 ghz range in the uplink and 11 7 to 12 2 ghz frequency range in the downlink.
With the variety of satellite frequency bands that can be used designations have been developed so that they can be referred to easily.
In europe ku band downlink is used from 10 7 ghz to 12 75 ghz for direct broadcast satellite services such as astra.
Because of its weaker power it requires a larger antenna usually above 1 8m 6ft.
6ghz band frequency is used for uplink and 4ghz frequency band is used for downlink in c band satellite communication operation.
Now as would have thought separate frequency bands are always allocated for uplink and downlink signals often separated by a gap maybe for future allocation since the span of guard bands.
These terms should not be confused with downstream and upstream.
The c band is primarily used for voice and data communications as well as backhauling.
The modulators use standards such as digital video broadcast to organize communication over the microwave link.
However due to the lower frequency range it performs better under adverse weather conditions on the ground.
C band satellite will usually will have 5 925 to 6 425 ghz frequency range in the uplink and 3 7 to 4 2 ghz frequency range in the downlink.
Digital data is sent to the modulator which takes the data and converts it into a modulated signal in the intermediate frequency range 70 140 mhz.
5925 mhz to 6425 mhz is uplink band where as 3700 to 4200 mhz is downlink band.
The direction from vsats to sallite is known as uplink and the direction from satellite to vsats is known as downlink.
Ka band 26 40 ghz communications satellites.
Digital satellite uplink chain.
