Video Transmitter

Wireless Video Transmitter - Watch TV Anywhere in the House

If you want to watch video on a second TV in a different room away from where your audio-visual equipments are normally located, you may want to consider getting a wireless video transmitter. It is a two-component system consisting of a wireless transmitter and a wireless receiver. To make it work, first connect the transmitter to a video source such as a cable TV box and the receiver to the second TV in, for example, the garage. When switched on, the transmitter sends continuous TV signals across the air to the receiver. The receiver in turn feeds live TV pictures to the second TV in the garage. Now you can enjoy live TV broadcasts in the garage as if you are sitting in the living room. These wireless signals can penetrate walls and floors, meaning that the transmitter and receiver do not have to be within line of sight of one another.

The main advantages of using this kind of devices are convenience, flexibility and cost savings. It is convenient because you don't have to run long wires around the house to connect between the video source and the video display. It is flexible because the wireless receiver can be moved around easily, with no need to install new wires or re-route old ones. It saves money because you don't have to buy extra devices such as a second cable box or a second DVD player in order to watch video in a second room.

It is not just the cable TV box to which the transmitter can be connected. Other video sources like DVD players, DVR or TiVo boxes, satellite boxes etc can also be connected. This way you can watch not only live TV programs, but also DVD films or pre-recorded TV programs on your second TV.

It can also be used to do audio transmissions. The wireless video transmitters generally accept RCA cables as inputs. So provided that the particular audio source has RCA outputs, it will be able to connect to the transmitter. Let us say you have a PC with a sound card having RCA outputs and you connect it to a transmitter. If you then connect a set of speakers to the receiver located somewhere else, you can listen to the MP3 songs stored on the PC without having to sit next to it.

The frequency of transmission is also an important consideration when purchasing a wireless video transmitter. Many of these units operate in the 2.4 GHz band. The trouble is that this greatly increases the likelihood of interference with other household devices. Microwave ovens, wi fi networks and many cordless phones operate in and around the neighborhood of 2.4 GHz. It is quite common that switching on and using one of these devices will interfere with the operation of the others. Many devices have the ability to select channels for use and this can mitigate the interference problem somewhat.

The good news is that there are transmitters that operate in the 5.8 GHz band, away from the congested 2.4 GHz band. These 5.8 GHz units are thus much less likely to suffer from interference issues, given that most household electronic devices do not operate around 5.8 GHz. Recently manufacturers have begun to introduce newer 5.8 GHz cordless phones, so you do need to watch out for that in order to avoid potential conflicts.

With this electronic gadget, you can watch TV or listen to music anywhere in the house. It takes just minutes to set up, without complex installations and expensive additional equipments.

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Key Points For Choosing The Best Wireless Audio Transmitter Product For Whole-Home Audio Streaming

A growing number of wireless audio transmitter products promise the ultimate freedom in streaming music all over the home. We will take a look at the most common technologies for wireless audio and give some tips for selecting the best wireless audio product.

Getting audio from your living room to your bedroom can be quite a challenge in particular in homes which are not wired for audio. There are a number of technologies solving this problem. These include infrared wireless, RF wireless, wireless LAN (WLAN) and powerline.

Infrared is restricted to line of sight since the audio signal is sent as lightwaves and for that reason products using this technology, such as infrared wireless surround sound products, are restricted to a single room.

RF wireless audio devices broadcast the music signal via radio waves. These radio wave signals can easily go through walls. The signal is broadcast either by using FM transmission or digital transmission. FM transmission is inexpensive but rather prone to hiss, audio distortion and susceptible to interference.

Products using digital wireless audio transmission, such as Amphony audio transmitter products, employ a digital protocol in which the audio is converted to a digital signal prior to transmission. This method guarantees that the audio quality is entirely maintained. Some transmitters use some form of audio compression, such as Bluetooth transmitters, which will degrade the audio to some degree. Transmitters which send the audio data uncompressed will attain the highest fidelity.

Wireless LAN (WLAN) products are practical when streaming from a PC but will add some amount of latency or delay to the signal since wireless LAN was not originally designed for real-time audio streaming. WLAN receivers ordinarily require purchasing a separate LAN card to be plugged into every receiver.

Powerline products broadcast the audio by means of the power mains and offer great range. They run into problems in houses where there are separate mains circuits in terms of being able to cross over into another circuit. Also, these products build in a delay of a number of seconds to safeguard against transmission errors during power surges and spikes which prevents their use in applications where the audio from wireless loudspeakers has to be in sync with other non-wireless speakers or video.

Here are some tips for picking a wireless audio system: If you plan to stream audio into several rooms of your home, be sure to select a system that allows streaming to several receivers at the same time. That way you don’t have to buy a separate transmitter for each receiver that you are streaming to. Some products have some sort of error correction built in which will help guard against dropouts in case of strong wireless interference. Choose a digital RF audio transmitter to make sure that the audio quality is maintained. Make sure the audio latency is less than 10 ms if you have a real-time application such as video.

Pick a transmitter that has all of the audio inputs you need, e.g. speaker inputs, RCA inputs etc. Get a wireless system where you can buy separate receivers later on. You should check that you can get receivers for all the different applications you have. Such receivers may include amplified receivers for passive speakers or line-level receivers for active speakers. If you go with a digital audio transmitter, pick one with an input audio level control knob to prevent the audio signal from clipping inside the transmitter audio converter. This will guarantee optimum dynamic range regardless of the signal level of your equipment.

Ensure that the system offers amplified receivers with a digital amplifier to guarantee high power efficiency. This will help keep the receiver cool during operation. Also, make sure the amplifier provides low audio distortion. This is crucial for good sound quality. Make sure the receivers can drive speakers with your preferred Ohm rating. Selecting a product where the wireless receivers have a small footprint and easy mounting options will help in the course of the installation. Devices which work in the 5.8 GHz frequency band will have less problems with wireless interference than products using the crowded 900 MHz or 2.4 GHz frequency band.

can you give me guides to make a wireless audio/video transmitter and receiver or sites that can help me?

wireless connector... like from dvd to tv

Hello marlon:

Yes, there are many choices. You can build one, buy a kit to do it, or buy them ready made:

You could build a modulator and connect an antenna to it to wirelessly send a signal to a TV. Here is a link to a PDF describing such and it includes a schematic diagram.

http://answers.yahoo.com/question/index;_ylt=Ar.OGQGorIAcoUNJgQNS86qzxQt.;_ylv=3?qid=20080223033653AAXhN6I

Or, you can buy the kit:

http://www.electronickits.com/kit/complete/video/ck2100.htm

Also, you can buy video transmitters from the following: They are more commonly known as VIDEO SENDERS: Here’s some links to choose from:

http://www.ramseyelectronics.com/btv/

http://www.x10videosender.com/

http://www.blackboxvideo.com/video_sender.htm

http://www.letsautomate.com/10773.cfm?

A word of caution: Do not put any personal video on such systems that you would not like your neighbors to see, because they may transmit to adjacent houses or apartments.

Preview: unboxing the 900MHz FPV video transmitters from HobbyKing