Why Coax Splitters Had Been So Popular Till Now?

Coax Splitters

Ever wondered from where we get the high-speed internet broadband and the DTH tv operations right at our doorsteps and what are those wire things that the technicians spend their day digging around? The simple answer to that question is Coax cables. Coaxial cables are the cables with a single conductor inner core heavily shielded by cladding material to overcome the transmission losses. These cables were initially employed in transatlantic telegraph lines in 1880. Still, the theory underlying them was not published until 1880 by Oliver Heaviside, an English physicist, engineer, and mathematician who patented the design in the same year.

The main focus here is to know what coax splitters are. Sometimes there arises a need to divide or split the incoming signal into multiple outlets. In this case, all you need is just a tiny piece of hardware known as the coax splitter.


Coax splitters and the science behind them

For example, what to do if we want to bifurcate the broadband output cable from the wall to both the internet modem and the TV? In this situation, one wire from the splitter’s single side would be hooked into the wall, while the two coaxial cables from the splitter’s other side would be linked to your TV and cable modem.

A coaxial cable splitter functions similarly to the several double adapters you’ve probably got around the house for plugging multiple electronics into power outlets. One end connects to the source, while the other splits the signal into two or more outputs that can be used by several devices.

In video transmission systems, coax splitters are used to split a single video feed into various locations. Coaxial cable splitters are commonly available in two, three, four, or six-way configurations. The ideal impedance setting on both the input and output ports is maintained by a coaxial cable splitter. This impedance is commonly 75 ohms for video coax systems. A coax splitter takes power from the input port and splits it evenly among the output ports, as the name implies. For example, a 2-way splitter contains a single input port and two output ports. 50% of the power of the input signal is sent to one of the output ports. The other half is sent to a different output port.

Differences in the quality of coax splitters

All Coax splitters aren’t manufactured equal. Low-quality coax splitters can degrade visual signals by creating signal attenuation (signal loss) and numerous reflections, which can result in ghosting (shadows on the picture). A single ferrite in the low-quality splitter attempts to manage the splitter’s impedance. When this fails to achieve a satisfactory wideband impedance match, undesirable reflections and signal loss occur. The high-performance splitter features a printed circuit with various components that ensure the splitter’s performance over a wide frequency range (preferred).

Knowing if a coax distribution system has splitters and being able to analyze the splitter quality is frequently highly valuable. It can also be used to figure out how many times the signal is split on a given run. Because some installation procedures only allow for a two-way split, determining whether there are additional splitters is critical.

Advantages and Disadvantages of Coax Splitters

In today’s world, coaxial splitters are a common sight. Because there are so many various technologies that use coax signals, individuals can use splitters to send a single coax output to multiple devices at the same time. They may now connect several gadgets in one location. However, there are some drawbacks to the convenience.


  • Many individuals nowadays want to connect many gadgets in one spot, such as broadband connections and tv (the two most common uses for coax cable). Having a pre-existing cable split rather than installing a new cable line in the same space is significantly more handy and cost-effective.
  • Coax splitters do not need to be plugged into a wall outlet because power is delivered directly through the coax cable. Any power-transmitting port on a coax splitter will be labeled “Port Power Passive.” Some coax splitters can supply power through all ports, whereas others only have one power-passive port. Select a coax splitter that can deliver power over several ports if you need to do so.
  • Cable splitters were once a simple way of separating a single coaxial cable into several outputs. They did the job, but they were large and pricey. Nowadays, however, a variety of considerably smaller cable splitters are available, allowing you to add multiple outlets to a single line while keeping the pricing the same.


While using a coaxial, or coax, splitter, a variety of things might go wrong, causing you to lose picture clarity, sound definition, or perhaps your signal entirely. Many individuals are perplexed by the logic behind coaxial splitters and are confused when difficulties recur.

  • The signal to the receivers becomes less clear as the number of devices connected to a single coax connection increases. Fuzzy or distorted channels on your television, as well as unusually poor Internet performance, are all signs of signal deterioration.
  • To save money, many homes separate their coax cable connection to provide both TV and Internet access. Although this is a good idea, cable internet requires a strong signal to work well, but because the signal is split, there may not be enough power to maintain a good connection, resulting in a poor transmitted signal or even service interruption.
  • Most people are unaware that the cable signals that travel through their homes are not an infinite source. It cannot be split into too many lines because each split diminishes the signal and increases the risks of connection failure.

Alternatives to Coax Splitters:

While Coax splitter is an all-rounded product that solves most of the issues, there are some situations where it might not be the ideal product to use or if used, may not give desired results. One such case that could arise is the presence of uneven length signal cables.

In that case, Taps have been proven effective as they split the signal unevenly. Actually, it is not uneven distribution but more attenuation based on the capacity of the tap. For instance, consider a setup having one long cable output and one small cable output. While usually, the splitter would bifurcate or split the incoming signal into two halves, it may prove ineffective or vain. Taps here emerge to the rescue by attenuating the signal in such a way that the shorter cable gets a lower magnitude of the signal, and the longer one receives a higher magnitude of the signal, thus avoiding and compensating for signal losses.

Where can I buy Coax splitters?

Looking to buy coax splitters? Well, one can pretty easily buy coax splitters from any e-commerce store as well as any local tool shop or departmental / hardware store. While buying Coax splitters, one should keep in mind the use and application that is relevant and hence buy accordingly.

Comparison between Coax splitters and Combiner:

Coax splitters, as the name suggests, are used to divide the incoming signal into parts more than one.Combiner, just as its name, is used to combine the incoming signals coming from the same or different sources into one.
Splitters can cause mutual interference.Combiners ideally eliminate any mutual interference.
The cable splitter can also be used as a combiner unless designed and engineered differently.As both the combiner and splitter have the same design, the same tool can be used for both functions.
Coax Splitter versus combiner

FAQs on Coax splitters

What should be kept in mind while purchasing the Coax splitters?

To be very honest, it all depends upon the needs and applications for which you are planning to buy the coax splitter. Try not to buy a low-quality coax splitter without having a printed circuit, and avoid using low-quality coax cables. Always try to purchase gold-plated cable splitters.

What to do if the signal is breaking and video quality on the output devices is affected?

You may have over-stress the signal if you notice the signal has been drastically diminished and/or the sound/picture quality supplied to each TV has been affected. This issue can be solved by buying an amplified coax splitter, which improves the cable transmission while allowing you to transmit to more outputs without risk of failure.

What is the maximum number of splitter points one should use?

There are up to six-way splitters available in the market. Still, for best results, we recommend avoiding splitting the main cable into more than two outputs and if you are planning to do so, always buy premium quality coax splitters.

Does a coax splitter reduce internet speed?

Ideally, it should not affect internet speed because it just reduces the signal strength, not the internet speed.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top