Why is my cheap 2 way splitter cable splitter working?

Question

So i bought a splitter from the dollar store and it works but my internet became a little slower. So I go to radioshack and buy a more expensive splitter and it doesn't work with my internet while my dollar store splitter works with the internet. What is going on?

Answer 1

some cheap splitters block DC, some have lower bandwidth, etc It seems evident that although they are both "splitters", they are not electronically equivalent

Answer 2

The more expensive splitter you bought from Radio Shack is designed for TV only.  The cheap splitter you bought from the Dollar Store has worse performance but covers the area necessary for your internet.  Get a better splitter that is designed for both TV and internet and you'll be fine.