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Question:

How to debug the TV satellite receiving antenna?

I was 5288 ATV, restore system settings, a Taiwan have not received, which under the guidance of master, before recovering, I wrote a few information channel, Guangxi channel: 5150, the vibration frequency of the downlink frequency: 03883, symbol rate: 05710, polarization: vertical...... Can you tell me which satellite is right? You can't even get the Guangxi station now

Answer:

I. antenna fixingFit the antenna along with the bracket on the antenna mount. The azimuth of the antenna usually has a certain range of adjustment, and it should be ensured that there is enough room for adjustment in the direction of reception. With range dial dial and pitch antenna, should be 0 degrees north and range of the right to the use of dial, dial 0 degrees and pitching surface consistent. To determine the north direction, generally use the compass measured magnetic north, according to the local declination value is corrected, can also be determined by the north star or the sun.Larger antennas are normally packaged in separate packages, so parts should be reassembled when installed. After the antenna is assembled, the error of the profile surface, the relative position between the main surface and the secondary surface, the relative position of the feed and the secondary surface are checked by special tools to ensure that the error is within the allowable range.
After checking, tighten the bolt.Whether the antenna feed is installed properly has great influence on the antenna gain. For the feedforward antenna phase center and parabolic focal points should be combined feed; for after fed antenna, should be fixed on the top of the mounting hole feed parabolic cone, and adjust the distance of sub reflector, the parabolic can focus on the feed phase center. The polarizer of the antenna is installed behind the feed. For a linearly polarized (horizontal and vertical polarization), should make the rectangular waveguide feed output port parallel to the narrow side and the polarization direction; for circularly polarized waves (such as the calendar circle polarization wave), should make the rectangular wave guide port two narrow side screws or medium piece vertical line with the phase shifter in the plane intersect 45 degree angle position.
The reception of satellite TV programs, whether it is the C band or the Ku band, is the main form of the receiving antenna. For the debugging of satellite antenna, it includes the direction of the antenna (elevation and azimuth), the position of the feed, polarization orientation and polarization tilt angle adjustment, etc. (according to the relevant material to find the required information). General in the debugging of the antenna antenna installation site, data set the satellite receiver to receive television signals to the first LNB, cable and satellite receiver, TV monitors connected satellite receiving antenna, and then follow the steps below to adjust the antenna.

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