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Title: Doesn't work
Review: I bought this item to combine two digital cable boxes into one cable out so that I could once again use both turners in my dual turner series 2 TiVo. I set one cable box to send it's signal out on channel 3 and one out on channel 4. Only one channel (3) was clear, channel 4 was not viewable. I bought a similar item from Radio Shack (their item 15-2586) which I got before this item and it did the same thing though channel 4 is a lot more viewable. I found out after I got that item home that it combined 1 UHF and 1 VHF signal to 1 output which I am guessing is what this item is for.
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