The number of db down for the beam edge is a matter of opinion it depends where you want to define the edge.
Satellite uplink and downlink formula.
G t ratio is the ratio of gain of the satellite to the thermal noise temperature of the satellite.
Strauss media strategies will coordinate either an event uplink or downlink via satellite using our years of experience working with production teams across the nation to coordinate all of the technical logistics.
Satellite system calculator for modern electronic communication 9 e jeffrey s.
1 calculation of uplink path loss.
Unintended signals from such users will occasionally make their way up to a satellite and be retransmitted on the corresponding downlink channel.
The bottom of ao 7 s uplink passband corresponds to the top of the downlink passband.
G t ratio depends on the satellite components.
Up link path loss.
The equation is same as the satellite uplink with a difference that we use the abbreviation d everywhere instead of u to denote the downlink phenomena.
The downlink is between 145 975 and 145 925 mhz.
Typically at about the 4 5 db contour the beam is starting to drop off rapidly so there will be large variations in uplink g t the uplink sensitivity and downlink eirp as the satellite moves about slightly.
Uplink c n o db hz the up link of a satellite circuit is the link in which the earth station is transmitting the signal and the satellite is receiving it.
Here s a chart that shows the relationship.
The venerable linear satellite ao 7 has a transponder with an uplink between 432 125 and 432 175 mhz.
Our satellite uplink and downlink service is a key capability that a number of clients have found to add great value to their events.
For c band up link frequency is in the order of 6 g hz.
G t ratio indicates figure of merit.
Beasley and gary m.
The uplink frequency range is also used for non satellite military communications mostly aviation which uses analog am and in asia mobile phone traffic which uses narrowband fm.
Satellite downlink in this process satellite sends the signal and the earth station receives it.
