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I used to work for charter and then as a prewire consultant for several builders and I'll tell anyone even thinking of using RG-59 that when the cable company attempts to install digital services or web services they will want to replace it with RG-6. If you are looking to get the best signal possible without getting yourself in trouble call your cable company and have them add their wire maintenance plan (if available) to your service. Once you have wire maintenance in place cut the drop outside so that water can get into the line, just slice the shielding about 6 feet up from the junction point to the house, pour some water on it if you have too.
Water in a line is an automatic replacement and that far up they will have to replace the complete drop. Ask the tech that comes to please run RG-11 line to your junction point because you want the lowest amount of signal loss possible, then you have RG-11 from the tap to the junction, and RG-6 to your outlets, you will be blazing DB's.
and never use a surge suppressor on your interior cable lines. The ones that you see built into outlets and power strips will kill your DB level faster than anything. If properly installed the system is surge protected and grounded outside so no need to worry about that end of it.
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