High-frequency head of common sense

Common sense
Each satellite on 24 television channel, usually have to make the fullest use of these channels, and avoid the interference between adjacent channels, often divided by single or double channel order, respectively in different modes of polarization of electromagnetic launch. Therefore, satellite ground receiving USES high-frequency head (LNB), must have the ability to receive double polarization electromagnetic wave, and to receive all 24 channels of TV programs.
1, what is the dual polarity LNBF?
This is a not of servo motor and feed integration dual polarity high-frequency head, from the LNB circular waveguide in the mouth, you will see the two mutually perpendicular probe, is used to receive of horizontal polarization and vertical polarization signal respectively.
2, how to avoid the electric feed will harm the performance of the system?
Why say exceptional companies with Turbo - 1200 type LNBF can avoid) (using the mechanical switching electric feed the damage on the performance of the system?
In adopting the traditional polarization direction of the servo motor switching system, the passive probe and normal waveguide feed horn can make the system equivalent noise temperature go bad a lot, a 30 ° K LNB additional feed horn is easy to deteriorate to 50 ° K. Bipolar LNB is to use two active probe directly pick up signals in the waveguide: avoid using servo motor system signals the loss, so using the latest technology of bipolar high-frequency head can obtain the best effect.
3, what is the "equivalent" LNB temperature noise?

LNBF noise temperature is the sum of LNB and feed horn noise temperature, therefore, it is different from the LNB noise temperature. "Equivalent" LNB noise temperature can use LNB appropriate comparison between LNBF.
4, how LNBF output two signal polarity?
LNBF output only one F connector, how to output two signal polarity?
This is to use two swappable 13/18 v from the receiver power supply voltage to determine what is needed is horizontal polarization signals or vertical polarization. Therefore, it is through the LNBF internal electronic switch circuit to select the corresponding signal, guarantee the stability and reliability.
5, probe rotation is how to return a responsibility?
We to LNBF waveguide using the most advanced design, horizontal/vertical signal between the two probes isolation more than 20 db and get low temperature coefficient of noise, completely replace the traditional mechanical rotation of the electric feed probe structure.
6, this is one of the best ways to convert polarity?
Aspen bipolar LNBF provide direct polarity switch, so it is a completely electronic conversion system, it does not exist electromechanical conversion device with delay. Therefore, eliminates the distortion caused by probe mechanical rotating image. When change the channel, LNBF images can provide users with the most clear and comfortable.