<div class="bbWrapper">Please define what DBS service is in use.<br />
And which dish / lnb combo you have.<br />
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DirecTV uses some 22khz switching, in some cases.<br />
Dish uses some diseqc switching, in some cases.<br />
So, without knowing more, it is impossible to recommend an electronic switch.<br />
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The use of an A/B switch is ... an invitation to problems.<br />
For normal operation, both Dish and DirecTV receivers expect to be connected 100% of the time to their dish.<br />
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The best and most reliable answer, with the least chance for trouble, is another coax, in my opinion.</div>