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Chapter 3 - Satellite Dish Assembly

 
 

Assembly of the dish does not require a lot of tools, but you may need the help of someone else for lifting and moving some of the heavier or more unwieldy parts of the dish, specifically the dish reflector itself.

Training Videos on dish assembly are available here.

Below is a typical installation for our Galileo 1.2 Meter satellite system, which is very similar to all of our satellite systems.

The VSAT satellite system will ships in several boxes normally on a shipping pallet. It will normally ship to the customers installation location, or sometimes directly to the installer. Make sure to check for all required parts for a successful installation.

Prep the Dish.

Use the cardboard shipping box to keep the reflector from scratching on the ground as you install the mounting bracket.

Mount the Dish Bracket

The mounting bracket lines up with the 4 holes on the back of the 1.2m reflector. Make sure that you're using the correct alignment - while rare, it is possible for an installer to install the mounting bracket in a way that does not hit all 4 holes correctly. When in doubt, call Ground Control.

Open up the Sleeve

Loosen the sleeve nuts so that you may slip the sleeve and dish over the top of the post - either the center post of a non-pen mount, or the top of a pole-mount mast.

Mount the dish

Place the dish onto it's mounting pole (shown here: a non-pen mount) so that you may install the dish arms and electronics. IT is recommended that you do this when the non-pen and the reflector are in their final installation location.

Loosen the Elevation bolts

On both sides of the mounting bracket, you will find a pair of bolts that need to be loosened in order to raise the elevation of the satellite dish. Slightly loosen these 4 bolts.

Loosen the Azimuth Bolts

Under the mounting bracket, there are three bolts under the "Azimuth Plate" Loosen these bolts so that you may move the azimuth (horizontal rotation) of the dish.

Raise Elevation

Raise the elevation of the dish by turning the Elevation Fine Adjustment bolt on top of the mounting bracket (as shown). Pull back slightly on the dish to prevent it from binding the threads of the adjustment bolt. You will want to lift the dish to about 30-45 degrees.

Build the Dish Arms

Install the three arms to the sides of the satellite dish, using the included hardware. The dish arms hold the radio equipment, so be sure to install it carefully, and tighten all the bolts down once you've gotten all three arms in place.

Mount the Radio Bracket

Use two bolts to secure the radio bracket to the top of the dish arm. Again, make sure these bolts are sufficiently tight.

Mount the Feed horn

Place the feed horn in the mounting bracket so that the receiver (LNB) is vertical to the bracket. i.e.,, the wave guide arm that has the LNB should point that LNB straight upward.

Mount the Feed horn

Place the bracket Clamp in place and finger tighten the two bolts to that you may slightly rotate the whole radio / wave guide / feed horn assembly IN this bracket.

Wave guide Spacer

Locate the wave guide spacer (hockey puck shaped) and place a supplied O-ring into the circular channel. Apply a thin coat of grease, supplied in one of the red pill-like capsules. You may also use DiElectric grease found at any auto parts store.

Waveguide Spacer

Here, the spacer has been coated with grease. Note the orientation of the spacer with the "0" mark on the top. Place the spacer with the 0 keeping it's alignment straight up.

Waveguide Spacer

The spacer is placed onto the waveguide, and two narrow bolts are used to hold it in place for now.

Waveguide Spacer

The two bolts will also be used to mount the transmitter.

Transmitter

Being very careful NOT to touch the orange plastic film that covers the transmitter opening, grease up another o-ring and press it into the transmitter as shown. IF you do touch the plastic, you will destroy the RF signal quality.

Should you accidentally touch it, clean it thoroughly with windex and paper towels, then allow to dry.

Even though it appears that you are installing the transmitter horizontally, the physical arrangement of the transmitter is not what determines RF polarization - and the RF signal will come out vertically polarized.

LNB - Receiver

Place a provided o-ring into he circular groove on the LNB.

Being very careful, grease the O-ring. Make sure that you absolutely do not touch the plastic firm that covers the opening, or you will, like the transmitter, prevent it from functioning. Should you accidentally touch the film, clean the whole surface with windex and paper towels, then allow to dry.
Orient the LNB so that it lines up with the waveguide receive feed, shown below.
Mount the LNB with with the four provided bolts. Be very careful not to smear the DiElectric grease.
Tighten the LNB into place.

Make sure that the radio unit is held firmly in the mounting bracket, but not so firmly that you cannot rotate the unit.

Rotating the whole unit is how you will adjust the polarization of the unit. When instructed to during the Cross-Pol test, you will adjust the polarization and then lock it down to prevent drift.

AT this point, you may begin pointing the dish properly.


Instructional videos for installation of a 1.8 and 2.4 Meter are also available.

VSAT Installation Video iDirect VSAT Installation - 27:30 minutes
Installation of a 1.8 Meter dish on a non-pen roof mount and connecting and activating an iDirect iNFINITI 3100 Gateway.
(Right-click above link and choose "Save Target As" to save video to desktop)

VSAT Installation Video Galileo VSAT Installation Video - 20:00 minutes
Installation of a 1.2 Meter satellite dish on a non-pen roof mount and connecting and activating to a Galileo satellite gateway.
(Right-click above link and choose "Save Target As" to save video to desktop)

 

 
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