The numbers on each splitter’s OUT branch indicate how much signal is lost after passing through that branch. For example, a 2-way splitter has 3.5 on each leg. This means that 3.5 dB was lost as the signal passed this section. Note: The signal loss listed on splitters is how much is lost at around 50-100MHz.
A splitter has approximately 3.5 dB loss on each port. TV signal splitters with more than two outputs usually consist of several two-way splitters.
The decibel (dB) is considered the baseline against which all telecom designers compare the performance of cabling systems.
You want at least a 1 GHz splitter. 900MHz usually works too (unless your cable company actually goes beyond a gig, which I seriously doubt). 1 GHz means that the splitter is designed to pass signals up to 1 GHz. You may also have the option to purchase electricity or not.
3.5dB loss is half, 7dB is half again. This is the absolute minimum possible loss when splitting a signal.
The three things to consider when choosing a coaxial splitter to split your antenna signal are frequency, attenuation (or dB loss), and the number of outputs.
In the antenna game, we are interested in the signal level, especially at the input to the TV tuner. All dB values given on this page refer to the signal level. The decibel (or dB for short) is a much misunderstood unit, it’s just a ratio.
A splitter is a device used to split a cable signal between two or more devices. A splitter weakens the signal level, which can cause a temporary loss of service, or in rare cases, a loss of service.
Cable loss can be measured using the return loss measurement available in the Cable & Antenna Analyzer. A short circuit at the end of the cable reflects the signal back and the energy lost in the cable can be calculated.
Are there quality differences in coax splitters? Not all coaxial cable splitters are created equal. Poor quality coax splitters can negatively affect the video signal by causing excessive attenuation of the signal (signal loss) and multiple reflections that can cause ghosting (shadows on the picture).
Splitters for coaxial cable (the cable used for TV signals) work on the 5-1000MHz band used by modern digital cable signals or the 5-2300MHz band used by satellites -TV signals is used. You can use high-frequency splitters for low-frequency cable signals because their range covers the entire low-frequency range.
If you need to split the cable to your cable modem, you should either use a tap (losing only on one end going to your TV) or high quality 2GHz splitters, and because of Je lower the signal level, the more the modem may not sync at all, or you may experience packet loss and speed degradation.
Signal loss is within 10% of what is rated for each output. Good signal levels on all 3 TVs when used on Digital OTA TV.
If a cable splitter is properly installed, it should not affect the speed of the cable modem. There are a few things that a splitter can affect, which we’ll get to, but speed shouldn’t be one of them.
Grounding through the splitter is not recommended because a lightning strike or system surge can essentially fuse a splitter’s components together and the surge can hit your equipment. If you don’t have a ground, your equipment will NOT do any harm unless you get some kind of surge.
Use a splitter with as few connections as possible (two-way splitters usually have the lowest signal loss). Try not to daisy chain splitters (splitters connected to a splitter). If you need more ports, a four-way splitter is better than three two-way splitters. I’ve seen splitters with up to 16 ports.
The numbers on each splitter’s OUT branch show how much signal is lost after going through that branch. For example, a 2-way splitter has 3.5 on each leg. That means 3.5dB was lost as the signal passed through that leg. Note: The signal loss listed on splitters is how much is lost at around 50-100MHz.