Preventing Distortion in Audio/Video Transmitters
Audio/video transmitters are wireless devices that send audio and video signals between devices without the need to run cables and wires. For instance, a television station can transmit a signal to a single receiver for many households to be able to get the same signal.
But along with such technological advantages in wireless signals comes some drawbacks, including distortion, which can be even more exacerbated by objects blocking the way, a loss of sight lines, or poor connections.
AV transmitters aren’t necessarily entirely wireless, as they still require a main power source to operate. Wireless technology is certainly quick and convenient, but coaxial cable connections provide much better results, though they are more impractical and expensive to fix.
How Do AV Transmitters Work?
By connecting a wireless audio video sender to a device such as a television or DVD player, the device is essentially an audio/video signal broadcaster. The connection of an audio video receiver to another device within a certain range transforms the device into a receiver that can decode the signal. In order for AV transmitters to allow changing channels from a distance, a special remote control extender will likely be needed.
Antennas are typically built into the sending and receiving units, which means connecting the cable to the right jack is all that’s needed. In order to help reduce interference from other transmitters, AV signals are generally transmitted through wideband FM signals.
In order to prevent distortion, it’s best to select the ideal sender as per its specifications, which includes the range covered, the frequency it broadcasts on, and the antenna type of the device.
Interference can be caused by objects like microwaves, cordless phones, and other electronics because they operate under the same frequency as many AV transmitters, which broadcast signals in the 2.4 GHz frequency band. Such interference causes distortion. AV transmitters that broadcast on different frequencies are much less vulnerable to distortion from interference.
Certain transmitters offer adjustable frequencies that permit users to use settings that have a minimal amount of interference. In order for this to work properly, the transmitter and receiver need to be on the same channel. With poor reception and lots of interference, adjusting the channel can avoid interference from electrical devices. A simple and effective solution is to only use one device at a time.
Since AV transmitters depend on a clear line of sight for strong signals, it’s helpful to position the transmitter and receiver in an unobstructed spot. Essentially, both devices should ideally be in each other’s line of sight.
There are certain AV transmitters that are marked with the maximum range that signals can be transmitted over without obstruction. Most homes have obstructions over the distances specified by manufacturers. For those who want to broadcast signals to places outside of the house, one would need to obtain a unit that is specifically designed for outside use. Such transmitters can operate on range distances up to 20 times more than indoor transmitters, as long as there are no obstructions.
Types of Antennas
Most types of transmitters feature built-in antennas; however, certain transmitters have adjustable antennas in order to find the best signal. If more than one sender or receiver is being used, the antennas might need to be adjusted each time the devices are changed.
Reading Reviews to Choose the Right AV Transmitter
Customer reviews can be very helpful in narrowing down your choices as to which AV transmitter to buy. Of course, it’s important not to let negative reviews fully influence your decision, as people are more apt to posting complaints rather than positive reviews. That’s why you should also read expert reviews to get the real picture.
It’s recommended to read reviews from distributors or online forums where nobody benefits from leaving such reviews. Place more weight on sites where reviews are posted regularly.
Understand the Product
Make sure you review the listing information very carefully, and read the whole description. Here you’ll find information about the technical details of the product
The Bottom Line
AV transmitters are convenient in that they can connect many audio and video sources without the needing lots of cables going from one device to the next. While they are prone to distortion, buying the best quality AV transmitter can reduce this signal degradation. Take into account things such as signal range and broadcast frequency. And be sure to research your options before making your purchasing decision.