Here are some customer reviews of
RF Link AVS-5811 5.8 GHz Wireless Audio/Video Sender/Receiver
: I have the receiver about 50 ft away from the transmitter and the sound and picture are great. The IR remote is less than optimum so I purchased a seperate unit from Radio Shack.
 I purchased this to watch TV in the kitchen. I hooked it up to my system IN THE NEXT room. This unit only has four optional channels and apparently doesn't like 5.8ghz AT&T phones or 5.8ghz netgear wireless routers!
 Received the unit today and had it set up in under 5 minutes. I have it hooked up to my satellite (in basement) and it transmits to the bedroom TV which is upstairs. No problem going through furnace vents or floor/walls. At first I was skeptical about the picture quality I'd receive since my satellite is hooked up via s-video to my TV and since this unit doesn't have an s-video in/out, I was expecting poor quality. Instead, the picture looks crisp and the satellite on-screen menu looks crisp as well. My bedroom TV is a 21" LCD and it looks awesome. Sound is great. Had no problem using the IR gizmo with my satellite remote control -> all functions worked and the response time was great. Highly recommend this product!
I bought this 5.8 Ghz A/V wireless sender/receiver recently and am quite pleased with it. I used this product to transmit the audio/video signal from my Hughes HBH-SA DirecTV satellite receiver to a Zenith 27" analog TV downstairs. The video and audio quality is quite good, but the picture quality is not quite as good as a wired connection (but I think the quality is very close to what it would be with a wired connection). While I am quite pleased with the audio quality, there is a faint buzz in the background--a faint background noise that is barely noticeable, and therefore not a big deal. Also, I get absolutely no interference of any kind. One concern I have with this product: is that 5.8 Ghz cordless phones (which are far less common than 2.4 Ghz or 900 Mhz cordless phones) can interfere with it (although I have not experienced this since I don't own one of these cordless phones). So even though there are far less wireless products on this frequency, I am slightly concerned that I may get interference in the future if someone too close to me buys a 5.8 Ghz cordless phone.
As many people have said, one of the drawbacks to this product is that you must spend a lot of time fine tuning the connection between the transmitter and receiver until you find that "sweet spot." This can be time consuming, and required me to move both the transmitter and receiver to different locations, and even buy a 12 foot RCA composite A/V cable so I could move the transmitter to a location that is closer to the receiver. So, expect the possibility of needing at least one cable that is longer than the cables provided with the product (which are under 6 feet in length).
My biggest issue with this 5.8 Ghz A/V sender receiver was that it was incompatible with the Zenith 27" TV set it was bought for. This TV set had an available RCA Composite A/V input; hence an RF Modulator should *not* have been necessary. Using the TV's Composite input, the video and audio seemed perfect after finding that "sweet spot", but I experienced the vertical hold problem that a few other reviewers have mentioned. The picture would look fine during the show I was watching, but during certain commericals (especially those with white backgrounds) the TV's vertical hold would fail and the picture would flip vertically, sometimes several times. I initially thought this was a reception issue, and hence I spent too much time adjusting the reception betwen the transmitter and receiver, until I realized it was a compatibility issue. Also, the TV (during a show or commercial) would randomly reset the video input, resulting in the TV intermittedly showing the current channel and time (as if I pressed the ENTER key on the TV's remote). I believe the compatibility issue may be the same issue that many people had with certain Zenith TVs and game consoles--it would seem as though the vertical hold problem is a problem with certain older Zenith TV sets (this set was purchased in 1998). However, I am not sure if this problem can appear on non-Zenith TV sets, so it is clearly something that RF-Link needs to address. Most people who reviewed the product don't seem to have this issue, so I don't think the vertical hold problem affects most TV sets. The solution to this problem was to either plug the A/V receiver into one of the VCR's composite inputs, and then view A/V receiver through the VCR on channel 3 or to use an RF modulator. I bought the RF modulator and am using that, to avoid going through the VCR, since going through the VCR prevents me from watching my satellite TV downstairs while someone is recording something. Both solutions convert the RCA composite signal from the A/V receiver, to VHF on Channel 3 (or 4). This conversion eliminates the vertical hold problem, and the resetting problem I described, however, either solution slightly degrades the picture, and converts the audio to Mono. I have no problem with the *slight* quality loss caused by the RF modulation--it is much better than having to tolerate a flipping picture. This vertical hold problem was driving me crazy, so I would have returned the product had I not found a workaround.
One other issue with this product. The remote extender was totally useless for me. Many people have gotten the remote extender to work, but some have not been successful, like myself. Even if I put the IR mouse right in front of the satellite receiver, it still would not work properly. I think it depends on how the A/V transmitter is aligned with the component you are controlling. Fortunately for me, I happened to already own a Terk LF-UNIV remote extender, so I am using this separate product to extend the range of the remote. It works very well.
The bottom line is that this product works very well with great quality, but your experience may very depending on your setup. For me, the drawbacks were that it seemed to take too much effort to find that sweet spot (in my case buying an extra long 12 foot cable for the transmitter to move it closer to the receiver), the product had a major vertical hold issue with the TV set, and the remote extender functionality was worthless. It is annoying having to use two separate additional products (RF Modulator and Terk remote extender) to make this product work properly (when you consider the high cost of this RF Link product)--this is excluding the 12 foot long cable I had to buy which is not an unreasonable expense. Despite those drawbacks, good clear video and audio with no interference is great, since there is no way that I can use a wired connection to watch satellite TV on a TV set on a different floor from the satellite receiver. I simply cannot get a separate satellite receiver for that TV downstairs. Hence I am very happy with this product.
The bottom line is that this product works great and is easy to hook up for what it was really meant to do... It will transit audio and video wirelessly, through walls, from one TV to another.
The only thing that does not work great, is the IR Remote. In theory, you can have the main TV in your living room, put a 2nd TV in the kitchen and use this device to broadcast audio and video from the living room TV to the Kitchen TV. Well, that theory is true. But, in theory you are also supposed to be able to sit in the kitchen, point your remote control at the kitchen TV to change channels and it will change the channel on the living room TV. This function does not work, period. No matter how much you play with the position of the transmitte/receiver antennas or the IR remote itself, this feature just doesn't work.
I do not get interference with the picture or audio walking around the house. The quality is very good! And, I have a wireless internet network in my house and the signal from that does NOT interfere with the signal of the RF Link.
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