What are the output levels of a 2-way splitter?

In a 2-way splitter, the signal from a single input is divided into two outputs. Theoretically, when splitting a signal perfectly, each output would ideally be reduced by 3 dB due to the division of power. This 3 dB loss represents the halving of the power level as described by the logarithmic scale used in decibels.

However, it is important to consider that practical splitters are seldom perfect, and real-world splitters may introduce additional losses due to various factors such as inefficiencies in the components and circuit design. Thus, while the theoretical output from each leg of a 2-way splitter can be calculated as -3 dB from an ideal input, practical devices often vary based on specifications provided by the manufacturer.

When looking at the options provided, a value of 3.5 dB might represent a situation where the 3 dB theoretical loss is augmented by around 0.5 dB of additional loss due to the imperfections in the splitter. Therefore, outputs at approximately 3.5 dB are plausible for a typical 2-way splitter in practice, making this choice a reasonable and often used specification.

This is why the answer indicating that both outputs are at 3.