Satellite Frequency Bands Uplink And Downlink

Satellite vsat communication is split up in to four radio frequency rf bands that commercial communication and military satellites operate within.

Satellite frequency bands uplink and downlink. 70 150 mhz. Mode b would be called mode uv. For real time updates about which mode the satellite is in see the amsat live oscar satellite status page. So uplink frequency is different from downlink frequency.

The rf unit called upconverter is used to convert baseband frequency to rf frequency for transmissions in the uplink side. Here are the band designators the first letter stands for the uplink the second letter for the downlink. In gsm frequency range from 935 mhz to 960 mhz is used as downlink frequency range. Satellite frequencies ghz band.

Ka band 26 40 ghz communications satellites uplink in either the 27 5 ghz and 31 ghz bands and high resolution close range targeting radars on military aircraft. Satellite is in a low inclination low earth orbit and not visible north of about 30 degrees north or south of 30. As mentioned above in c band satellite network 3700 to 4200 mhz is used as downlink frequency band. The most popular frequency bands available on satellite are l band s band c band x band ku band k band and ka bands.

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. 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. Io 86 lapan a2 145 880 mhz. Uplinks on both 435 mhz and 1 2 ghz linking to 145 mhz and 10 ghz downlinks would be called mode ulvx but shut would still mean system switched off.

Frequency band separation allows the same antenna to be used for both receiving and transmitting simplifying the satellite hardware. In europe ku band downlink is used from 10 7 ghz to 12 75 ghz for direct broadcast satellite services such as astra. To overcome the above mention difficulties satellite repeaters must involve some form of frequency translation before power amplification. System activation was first observed at 01 02 utc on september 2.

Io 86 lapan a2 uplink fm 88 5 hz ctcss downlink fm.