PCT drop passives are of the highest quality, and are designed to operate over a wide temperature range (-40° F to +140° F), and can be mounted indoors or outdoors with no concerns for moisture or corrosion due to the sealed F ports and plating materials used on the splitter housing.
The input signal to a PCT indoor drop splitter will always be allocated equally, providing consistent strength signals to each output. The input signal to a PCT indoor drop tap is allocated unequally, providing different strength signals to each output. All PCT RF drop passives are engineered to provide superior intermodulation distortion and second harmonic performance.
Any time a signal is split, it will encounter insertion loss that will weaken the signals distributed beyond the splitter or tap. If you experience signal issues while using a drop passive, you may need to install an RF amplifier. PCT RF drop passives are also approved and used by many of the major Cable TV operators around the world.
PCT RF splitters are designed to equally divide the signals on the input port of the splitter to each of the output ports. Graphically, it looks like Figure 1. As this shows, 100% of the signal level is put into the input port, and 50% of the signal is on each of the output ports. This is typically measured in dB. A typical splitter will have approximately 3.5 dB of loss on each port.
TV signal splitters with more than two output ports are normally made up of multiple two-way splitters. For instance, a three-way splitter will have an additional two-way splitter on one of the output ports of the first splitter, and it will look like Figure 2. In this case, 100% of the power is split in two, providing 50% of the power to each output port. The second splitter then divides it again so that now 25% of the power is on the two ports from the second splitter. In terms of dB loss, the second splitter adds another 3.5 dB of signal loss, so the two ports off the second splitter will have 7 dB of loss, while the port off the original splitter will still have 3.5 dB of loss.
A four-way splitter will be made up of three combined two-way splitters, as shown in Figure 3. In this case, 25% of the input signals are on each of the four output ports. In terms of dB loss, there will be approximately 7 dB of signal loss on each output port.
PCT RF drop taps are designed to unequally divide the signals on the input port of the splitter to the output ports. These are typically used when one outlet is very close to an amplifier, and a second outlet is some length of cable distant. By using a drop tap, more signal can be provided to the long length of cable to get to the distant outlet. Drop taps are designed with different amounts of dB loss, from 8 dB to 20 dB or more, and are a good way to optimize the signal levels in a home network.
In addition to signal loss, there are other critical performance concerns with drop passives. With HDTV over the air service now being all digital, and especially in cable TV networks that include high speed data, it is very important that any passives connected to the in-house distribution network be of the highest quality so that they don’t degrade the digital signals going through them. PCT drop passives have been designed to meet all of these stringent requirements, including low insertion loss, excellent return loss, excellent port to port isolation, and excellent intermodulation/second harmonic performance. PCT drop passives are also designed to withstand high levels of electrical surges without failure, ensuring excellent long-term performance whether they are installed in an in-home distribution network using an off air antenna, or when used in a cable TV installation. PCT drop passives are the same units approved and used by the majority of the top 10 cable operators in North America, and are used by cable companies around the world. They are of the highest quality, and are designed to operate over a wide temperature range (-40° F to +140° F), and can be mounted indoors or outdoors with no concerns for moisture or corrosion due to the sealed F ports and plating materials used on the splitter housing.