Technical Section page 9  

Add more LNBs to your dish

	The photo shows three twin-output "universal" LNBs mounted with two adaptor brackets, on an 80cm "Orbital" dish, south of Manchester, England. The LNBs are positioned left to right for: 28.2'E - 19.2'E - 13' East of south You can see the 4-way DisEqC switch (bottom right). One LNB input is unused.
Notice that the bracket for the 13'E LNB (Hotbird) has to be bent downwards slightly and for 28.2'E (Astra-2) bent upwards slightly. This is because the arc of satellites appears to drop towards the horizon as the angle goes further east or west from due south, just like the apparent movement of the sun. The pole-mount dish was mounted on an existing tripod wall mount which some idiot had fixed by drilling holes into the mortar instead of into the bricks!
	View from the bedroom window showing more clearly the two slotted adaptor brackets, each holding an extra LNB. Left is for 13'E (Hotbird), centre is 19.2'E (Astra-1) and right is 28.2'E (Astra-2 Sky Digital and Eurobird combined). The dish is aligned on 19.2'E for the central LNB.
The other two LNBs are then slid along the slots to give best signal readings. You can use whichever type of LNB you wish, provided they have 40mm diameter necks to fit in the saddle clamps. For suitable dish kit CLICK HERE

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Copyright ©1998 Martin Pickering
Version 1.0 updated on July 19, 2001
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