FTA dish and cable grounding questions

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comfortably_numb

comfortably_numb

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I have the GeoSat Pro 90cm dish with SL2PLL dual LNBF. Both outputs are connected to a ground block (at the bottom of the first photo. top ground block is OTA antenna). Ground block is connected to a ground rod. One coax feed then enters the building, going to the living room, the other one to the bedroom.

My dish is on a "roof mount" sitting on the front porch, anchored by 8 cinder blocks.

Does the mount need to be grounded, or is it enough just to have the coax leads grounded at point of entry?

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IMG 0099
 
Phalaenopsis

Phalaenopsis

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I have the GeoSat Pro 90cm dish with SL2PLL dual LNBF. Both outputs are connected to a ground block (at the bottom of the first photo. top ground block is OTA antenna). Ground block is connected to a ground rod. One coax feed then enters the building, going to the living room, the other one to the bedroom.

My dish is on a "roof mount" sitting on the front porch, anchored by 8 cinder blocks.

Does the mount need to be grounded, or is it enough just to have the coax leads grounded at point of entry?

View attachment 132019

View attachment 132020

IMHO its enough to just ground the coax. Worst case scenario is to burn your LNB and the short piece of coax going to your ground block. It is extremely unlikely that lightning will ever hit your dish since it’s low and ground mounted.
 
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Titanium

Titanium

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The LNBF is isolated by a plastic case and the dish / mount are not grounded. I agree that is very unlikely that you will have a lightning strike at that height and position, but it would be best practice to bond the mount for static discharge. Especially important if adding a motor or a switch at the dish.
 
Wescopc

Wescopc

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The 18 gauge steel wire that is used for grounding the mast/dish is only for static electricity. It doesn't protect against a lightning hit. If you are in a damp place like western Oregon - not much static electricity to be found. If you are in a dry windy part of the country - then the ground wire might protect the LNB and a switch. Not there to protect people from electrocution in any case.
Bob
 
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