A low noise block amplifier, or LNB, focuses a satellite transmission from the parabolic reflector it is attached to. The LNB converts the transmission to a TV signal that the satellite receiver can then display on the TV. Adding additional LNBs to an existing satellite dish requires a multiple LNB bracket being added. The procedure is straightforward and similar regardless of the make of the dish. A single common household tool will be needed as well.
- Skill level:
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Things you need
- Phillips screwdriver
- Dual LNB
- Coaxial cables, 3 feet long
Loosen the screws on the side of one of the LNBs that is on the lateral arm support pole connected to the front of the satellite dish. Use a Phillips screwdriver to loosen, but not remove, the screws. Pull the LNB off the end of the lateral arm support pole and place it aside for the moment. Leave the coaxial cable connected from the LNB to the satellite multi-switch alone.
Loosen the screws on the side of the multiple LNB bracket with the Phillips screwdriver. Place the bracket onto the end of the pole where the LNB formerly resided. Rotate the bracket so that the two extruding rods on one side are now facing towards the dish. Tighten the screws on the side of the bracket with the Phillips screwdriver.
Place the LNB that was removed earlier onto one of the two extruding rods. Rotate the LNB so that its plastic-tipped front is facing towards the dish. Tighten the screws on its side with the Phillips screwdriver.
Loosen the screws on the side of the dual LNB with the Phillips screwdriver. Place the dual LNB on the bracket's other extruding rod. Rotate the dual LNB so that the plastic-tipped fronts of the two LNBs face towards the dish. Tighten the screws on the side of the dual LNB with the Phillips screwdriver.
Screw an end of a 3-foot coaxial cable into one of the two coax outputs on the dual LNB. Screw an end of another 3-foot coaxial cable into the other coax output on the dual LNB.
Screw the two free ends of the coaxial cables into two adjoining open inputs on the satellite multi-switch. Tighten the ends of the coaxial cables with a pliers to guarantee a secure fit.
Tips and warnings
- The satellite dish should be fine-tuned after the addition of the added LNBs.
- Due to its unique construction, a DirecTV slimline satellite dish cannot accept a multiple LNB bracket in the same manner as conventional dishes can
- The coaxial cable attached to the satellite receiver will need to be modified in order to adjust to the additional LNBs.
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