photo] Yan Weiping: Asia Satellite Ku

Anhui Yan Weiping Last November, at 122 ° E on the 4th Asian satellite beam coverage area north BBS to adjust the No. 4 Ku-band Asia beam BBS coverage from south of the Yangtze River in China extended to the north, northwest, even the Northeast, the original signal can not get BBS areas north of the Yangtze River, is 0.6m or less use of the partial feed antenna can easily receive Ku-band Asia, on the 4th day of waves on the Hong Kong live.

  Day in May of this year, I read unlock Skywave live broadcast news, very exciting. Long live broadcast from the previous day did not unlock aired, they have been unable to see her for hosting the Games. Heard above the national Geography Channels have Chinese subtitles, GOAL-1, GOAL-2 channel is very exciting football, think of these, I will not mind the Internet, and so on without a break from the bars back home. At that time, already dark, we do not want to climb up the fourth floor roof tune the antenna, and then decided to use my Security The window to receive a pot of 138 ° E and the binary stars 146 ° E satellite Ku-band signals 0.6m antenna to receive a partial feed. Since the days of broadcast waves are right-hand circular polarization by way of broadcast, so in theory need a dedicated right-hand circular polarization LNB. Although I have not dedicated the D-tuner, but you can use the high-frequency vibration to 10750MHz polarization of the first film without direct reception. Double Star, I just received a pot of 138 ° E satellite Ku-band signal is 10750MHz Phillips head, and then to TV And the receiver moved to the balcony, turn on the TV and receiver (I use the receiver is a small rich), enter the Channel search satellite, select a space satellite, edit, import 122_Ku, then the local oscillator frequency changes as 10750MHz, then select additional transponders.

Then 6, 2005 issue of " Satellite TV Symbol rate quickly search manual "to find the parameters of Asia on the 4th, in the receiver in the downlink frequency, type 11804 and symbol rate 24444, no right-hand polarization as receiver, so you can not set directly with vertical polarization instead of "R", enter After exit, return to the Channel Search menu. In the Channel Search menu, there is signal quality display section, this is somewhat easy to find star. After all, the next step is to tune the antenna. As the antenna is in the security window, the order does not occupy space, so to flip. Before the window also received anti-theft Asian 4 Ku-band signal, so we already do well the. I was under the pad two blocks antenna, from 138 ° E position slowly turn to the direction of due south, less than half a minute to see the signal bounce, to the tune of 31% Shi You look a little polarization angle, signal quality up to 36% (Editor's note: to receive circular polarization signals do not consider the polarization angle, the operation should actually be the first to make a more accurate high frequency parabolic antenna at the focus). So, I decided to start blind scan. Through the blind scan, day 4 group signals broadcast waves were sweeping the horizontal polarization and vertical polarization of the 8 groups of parameters, I think this may be no reason it into polarization film, which received the level of polarization signal quality high, see Table (Editor's note: This phenomenon may be skewed by the high-frequency or high frequency head first installed within the deflection caused by the receiving antenna, if all components are precisely installed, and the associated polarization voltage of the circuit under different conditions the same, then use the horizontal and vertical polarization received signal quality should be the same). It appears that in our northern Anhui partial use of 0.45m outdoors fed antenna can easily accept Skywave live.

Signal quality comparison

Consecutive days two nights to watch live broadcast waves, I found its picture quality is absolutely nothing that program said. I hope that the days of broadcast waves to "Every Day will open", so that the general TVRO enthusiasts to satisfy my curiosity. [Key words]: Satellite   Ku-band   Antenna Comment Large   In   Small