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Wireless Cable TV

Overview

Wireless audio/video (AV) systems consist of two main parts: a Transmitter and a Receiver. The Transmitter uses a wired connection (most commonly via Composite RCA cables or HDMI cables) with the AV output from a source component such as a cable box, satellite receiver, DVD player, Blu-ray Player, DVR, Roku, or Apple TV. The Receiver uses a wired connection with the AV input(s) on a TV. Once the Transmitter and Receiver are installed the AV signals are sent from a source component out to the Transmitter, wirelessly on to the Receiver and out to the TV. Typical applications for this setup are when the Receiver may be located inside a cabinet, in an entertainment rack, behind closed doors or in another room; and/or the TV is located where a wired connection is not possible or may just simply be an eyesore, like a flat panel wall mount application. Without the need to make long AV wire connections you can place your devices almost anywhere.


Changing Channels Remotely

A common question with a wireless setup like this is how to change channels if the source component is in another room or in a location without a line of sight to the IR remote. Fortunately most systems include a built-in IR pass-through system. The Receiver features an infrared (IR) receiver, that takes in a signal from your IR remote and passes it wirelessly to the Transmitter and out to an emitter that repeats the IR signal to the source component. If the wireless solution doesn't include an IR pass-through, or if a little more discrete installation is needed, consider one of Smarthome's many IR Repeater Kits.


Wireless Frequency

It is also important to understand the frequency that the wireless system uses. Almost every home today is operating on at least one, if not multiple, wireless systems - wireless home automation, phones, doorbells, intercoms, security systems, sensors, speakers and more. Many of these use lower end frequencies, which you will commonly see as a specification of 314 MHz, 433 MHz or 900 MHz. More recently higher end bandwidths have been used, which you will see as a specification of 2.4 Ghz or 5.8 Ghz. The frequency of the device doesn't necessarily correlate to the quality of the product. The important thing to understand is that you want to try and make sure there aren't multiple products using the same frequency, as this can cause interference and decrease the reliability of the products. Ideally, you will want to be using different frequencies for each set of products to ensure the optimal results of your installation.


Expandability

The final consideration on picking the right wireless video transmitter is it's expandability, or the ability to send a wireless signal to more than one receiver. Not all system allow for this, So if you have more than one remote TV that wants to tap into the wireless video signal, just purchase an additional receiver for a system that supports it.


Quick Comparison of Popular Wireless A/V Systems

 

Terk Leapfrog Wireless Audio/Video System



RF-Link Wireless Audio/VIdeo System



Enforcer Wireless HDMI Audio/Video System

IR Pass-through Yes No Yes
Video Input RCA RCA HDMI
Video Output RCA RCA HDMI
Frequency 2.4GHz 5.8GHz 5.8GHz

Related Products

Wireless Speakers Wireless Home Automation Kits Wireless Home Security






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