At our house, the coax from the Directv Dish came in underground the block wall into the sprinkler box. There was no need to drill a hole through the block. Look inside your white sprinkler panel and see if you have your house coax cable ends in there. Then look on the outside your house and dig down a few inches and see if there is an unused plastic conduit pipe end coming from that box. The coax can be fed up through there. Good luck
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