[ADTech]

I have tested and am comfortable in recommending the Ideal brand of splitters available at Lowes (or was it Home Depot?).

The minimum required frequency range is 50-700 MHz. There is no need to spend extra for a wider bandwidth splitter "just because". Splitters labeled for cable TV are fine. Splitters labeled for "satellite" use are usually okay, depending on their internal construction. For example, the Ideal 85-334 that is labeled "Satellite & Digital TV", "5-MHz - 2.4 GHz" is fine.

Three port splitters come in two varieties: Balanced and unbalanced. A balanced splitter will typically be specified around -6 dB per port. An unbalanced splitter will have one port at -3.5dB and two at -7 dB insertion loss. Four port splitters will be around -7 dB per port.