Tighten the canister hardware at this time. Note: Azimuth rod is for adjustment only, it is not intended to be part of the structural integrity of the assembly, tightening the azimuth rod is not necessary.
Peak the antenna signal by fine adjustments made in both azimuth and elevation until the optimum signal is achieved. It is anticipated that maintenance, if required, will be minimal and easily handled by a local or in-house maintenance staff. The composite construction of the reflector is virtually impervious to any damages that could be caused by weather or atmospheric conditions.
It is only necessary to inspect for any physical damage done by vandalism or very severe weather conditions. Should any damage be detected to a portion of the reflector, contact the Customer Service Department at Prodelin for recommendations involving reflector repair.
If there are any signs of structural failure, the mount members that are damaged should be repaired or replaced. The feed horn window should be inspected to insure that it is intact so that no moisture can collect inside the feed horn. Open navigation menu. Close suggestions Search Search. User Settings. Skip carousel.
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Explore Podcasts All podcasts. Difficulty Beginner Intermediate Advanced. Page 26 3. Note that the sense of polarization is relative to the transmit band of the feed assembly and not the antenna system.
Follow the instructions in the listed sequence. Do not tighten any hardware until instructed. Apply silicone grease to [2] o-rings item 7 and place [1] in the o-ring groove in the circular polarizer item 3. The instructions in section 5. Page Periodic Inspection Check for corrosion - on the reflector structure and the mount. The composite construction of the reflector is virtually impervious to any damages that could be caused by weather or other atmospheric conditions. If inspection shows any sign of structural failure, the mount members that are damaged should be repaired or replaced.
Connect the feed rods to the feed support tube with items: 4, 6, 7 and with [ 2 ] of item 5. Tighten the hardware connecting the feed rods to the feed support tube Detail B. Therefore, when the reflector aperture is perpendicular to the ground, the antenna is actually looking Refer to Figure 2. Note: The following alignment procedure is intended only as a general reference guide for this antenna. For proper antenna performance, accurate alignment is critical.
Therefore, it is recommended that your own detailed procedure be used or contact General Dynamics Technical Support Department for additional recommendations. STEP This scale is used for nominal readings and is accurate to 2 degrees. Note: Elevation rod is for adjustment only, it is not intended to be part of the structural integrity of the assembly, tightening the elevation rod is not necessary.
Snug the hardware at the side of the positioner. Azimuth Adjustment: With the electronics set to acquire the satellite, rotate the antenna in azimuth until the satellite is found.
Tighten the canister hardware at this time. Note: Azimuth rod is for adjustment only, it is not intended to be part of the structural integrity of the assembly, tightening the azimuth rod is not necessary. Peak the antenna signal by fine adjustments made in both azimuth and elevation until the optimum signal is achieved.
It is anticipated that maintenance, if required, will be minimal and easily handled by a local or in-house maintenance staff. The composite construction of the reflector is virtually impervious to any damages that could be caused by weather or atmospheric conditions. It is only necessary to inspect for any physical damage done by vandalism or very severe weather conditions.
Should any damage be detected to a portion of the reflector, contact the Customer Service Department at General Dynamics for recommendations involving reflector repair. If there are any signs of structural failure, the mount members that are damaged should be repaired or replaced. The feed horn window should be inspected to insure that it is intact so that no moisture can collect inside the feed horn.
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Lets use proper terminology: Dish has opening angle, LNB feedhorn has illumination angle. RimaNTSS said:. Click to expand TBH I do not know that. But I know another thing- illumination angle of feedhorn should be equal to opening angle of the antenna, only then you get maximum performance of SAT-system.
Add: And another thing I do not know, is how to find out exact position of phase center of the feedhorn. Only what matters is antenna's opening angle.
Channel Hopper Suffering fools, so you don't have to. Staff member. My Location UK. Prodelin made two dish designs, 0. I also have one original feedhorn, by using it I get quiet good performance. Lets make another cut of parabola- Green offset dish.
I'm awaiting the feeds NeXT week. I'll know by then the actual Measurements. Channel Hopper said:.
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