Asia's No. 2 replacement star Asia 5 satellite has been launched for nearly half a year, and the adjustment of the downlink beam and the launch of the new transponder have attracted countless eyeballs. The network and professional media are mostly reports of the cauldron C-band. Due to the large capacity and high power of the star, the C-band coverage is wide, which provides conditions for us to receive signals from all over the country. Based on experience, it is decided to use the 0.75m offset antenna to perform C-band search on the multi-star manual pole base, because the azimuth adjustment disk on the multi-star manual pole seat has been accurately set to 100.5°E. 12-star positioning screws such as 105.5°E, 115.5°E, and 125°E eliminate misjudgment and increase search speed.
The preparation for the trial is as follows:
1. Install the C head on the Ku antenna L-bar. The author uses a plastic C-head special fixture that is as easy to install as the Ku head a few years ago, but the aperture is increased to insert the C-head waveguide, and the upper cover is locked. The tightening screw facilitates the adjustment of the polarization angle and the upper and lower sides of the waveguide. The lower part of the waveguide is equipped with a flat feed plate. In order to make it "efficient", a 5cm thin iron sheet is wrapped around the periphery. A few years ago, using its search for the 105.5°E Asian 3S satellite proved that it can also be “efficientâ€. For the strong hands-on ability, a C-head special fixture can be made of stainless steel with reference to the Ku head to ensure the focusing accuracy.
2. It is estimated that the 0.75m Ku antenna reflection area can only take part of the "Asia 5" signal transponder, and can prepare 22 used discs, which are ready for use.
Open the main menu, fill in the 5150MHz in the local frequency field, the polarization angle is on the zero mark line, enter the automatic search at the 9 o'clock position (commonly known as blind scan), search for a set of signals of 3769 V6527, the image is stable download, signal quality 5%. Carefully adjust the upper and lower positions of the waveguide and the planar feed disk, adjust the signal quality to the maximum (about 20%), and enter the automatic search again. Search for the 3883 H 6527 and 3984 H 28097 frequency signals, the signal quality is 15%. It seems that the 0.75m antenna is only able to withstand this. In order to get more repeater signals from the star, the only way is to increase the area of ​​the antenna reflection.
A few years ago, enthusiasts used CDs to install "wings" on the pot. The first time to install the "wings" on the pot was to use the sealing glue to paste. This method has poor joint precision and almost no wind resistance. All changes are made, affecting the accuracy of reception. Later, the author found a better solution, to spend a few dollars on the market to buy a bottle of PVC pipe adhesive, carefully clean the pot surface, use the pen to draw the paste line along the perimeter 2cm, and then glue on the disc (glossy Upper), use a finger to press the parabola with the pot surface to make the disc extend the best along the parabola.
In addition to FTV-HD, almost all C-band transponders were searched. Two groups of Macao 4155 V 11852 have mosaics, and 3809 H 3253 can be viewed stably. PK with the star 6B of 115.5 °E, loosen the upper end nut, lift the antenna, adjust the connecting rod, rotate the antenna to the corresponding positioning screw, 115.5 °E star receives about 50% of the transponder, CCTV stable, 4104 V27491 CCTV HD The signal quality is 23%. This is a major "good" news. It seems that "Asia 5" is indeed slightly better.
The 125°E Xinnuo No.3 is used for viewing. The signal is best for Guangxi 3827 H 5720, the signal quality is 40%, and the worst is Xinjiang 4120 H 27511. There are mosaics and the rest are all down.
In addition, 105.5°E Asian 3S was received, and 4 sets of transponder signals such as 4044 H 26499 were searched. It seems that the “Asia 3S†golden period has passed, old! We are increasingly looking forward to its replacement star "Asia 50" because "Zhong 9" is getting farther and farther away from us. Conditional balcony enthusiasts can choose the lm or more column type brand antenna, flip the antenna, the viewing effect will be better.
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