Hello Skooter Blog readers. Today I talk about Transmitter / Receiver A / V Extender with Wireless Remote Control 5.8GHz Pakite PAT-530 (PAT-530 5.8GHz Wireless A/V STB Transmitter/Receiver with IR Signal Extension Wire Set (Blue)) acquired on DealExtreme. This kit, manufactured by Pakite, model PAT-530 allows you to transmit video and stereo audio wirelessly, from a DVD player and / or a satellite receiver (Sky, etc.) ou qualquer outra fonte de áudio/vídeo que você desejar para uma TV localizada em outro local da casa, without the necessity of running wires, including transmitting the signal from the audio and video receiver's remote control to the transmitter, so that you can change channels and perform other operations without going to the site of origin of the signal equipment.
I had purchased a DealExtreme kit in these two years ago, manufactured by Gadmei, about which I wrote an article here on Skooter Blog. I use it to bring the signal from Sky from one room to the office, making a slave point. The main difference is that it uses the 2.4GHz ISM band, while this Transmitter / Receiver Pakite in banda de utiliza 5.8GHz ISM. The Gadmei still working fine, but has the drawback that suffer interference from other devices that also operate in the 2.4GHz band. Here this problem is maximized because the WiFi router is right next to the TV receiver, the computer with your Bluetooth dongle is also close, and just behind a wall for a microwave oven. With all this the receiver suffers from quite interference and it is very difficult to adjust a position that minimizes the problem. Furthermore, the transmitter does not allow much mobility by having to stay in the exact position (difficult to find) on top of the Sky decoder so you can transmit the remote control signal, or just ahead of the decoder (easier to adjust), so that the juggling must be made solely with the receiver.
The problem of increased interference after I bought a router Netgear WNDR3700 eBay no, a router excellent, dual band 802.11n, reaching 300Mbps. But, he seems to miss some noise (harmonic?) even channels that are not operating, further complicating the task of finding a position for the A / V receiver that does not receive interference.
For my tests, the Netgear WNDR3700 provides the best signal here in canal 1 do WiFi. My previous router, a 3Com, só permitia or channel bonding (using more than one channel to increase the bandwidth) no channel 6, so I never tested the best channel for this environment. Placing Netgear WNDR3700 no channel 1, with the channel 5 NIM (to provide length of band maior), the best channel for the A / V receiver would be the 4 (note that the frequencies of channels WiFi does not match the frequencies of the channels of the transmitter / receiver A / V, therefore there is no relationship between the numberings). However channel 4 the receiver is receiving greater interference from microwave, when it is in operation. The solution is to put the Netgear WNDR3700 no channel 6, with the channel 10 NIM, and let the receiver A / V channel 1, thus minimizes the interference from WiFi and microwave. But it is worth noting that the channel 6 not so good for the WiFi here, There is even a neighbor using the same channel on the router and the signal it gets here, therefore channel 6 (and its adjacent, since the channels WiFi is some overlap) is not the best option. Added to the problems with the WiFi router and microwave, there's also Bluetooth dongles that divide the whole spectrum in 2.4GHz ISM 80 channels, jumping on them all during transmission, then it is impossible to choose a channel on the receiver to run interference for Bluetooth. And I like to leave the Bluetooth on the phone to read and reply to SMS via computer, when I'm using it, since typing SMS on mobile is time consuming and boring.
Despite the possible interference, the Transmitter / receiver Gadmei works well most of the time, since bem positioned. I knew for a permanent solution I would need a transmitter / receiver that operates on another frequency. But in DealExtreme only had transmitters / receivers of 2.4 GHz, and prices in other stores such equipment is prohibitive. Ate that, finally, in November 2010 came the Transmitter / Receiver Pakite the list of new products, with transmission in the 5.8 GHz ISM band, and decided to buy it without delay.
The Transmitter / Receiver Pakite operates in the frequency range of 5.8 GHz ISM, with 8 channels to the user's choice, o que é sempre útil para tentar encontrar uma faixa que não esteja sendo utilizada no local. Despite the band 5,8 Be less congested GHz, 's WiFi routers that work in this frequency (my Netgear WNDR3700 is one of). It is advantageous to let the two bands enabled and use of 5 GHz devices us to suportam, to have less interference and therefore higher bandwidth. In addition to routers, some cordless phones and other equipment also use the 5.8 GHz band. Here is thankfully only my router, using channels 153 and 149 (which is centered on 5,765 E GHz 5,745 GHz, respectively), then most of the band is vacant. As for Telefones, who are purchasing a new wireless phone today should opt for models with DECT technology 6.0, which uses digital transmission in the 1.9 GHz band, which is not used by other equipment.
The Transmitter / Receiver Pakite also has a remote control extender, so that the remote control signal is transmitted from the receiver to the transmitter, allowing use of the remote satellite receiver, DVD player, etc. to control it despite being in another room. The infrared transmitter operates at 433MHz band (the same as the Gadmei), and is independent of the video and audio transmitter, including having a separate antenna. With the Pakite is much easier to use this function, because besides the infrared LEDs on the front of the device (for it to be placed on the apparatus that will control) There is also a cable of about 1 meters long with an infrared LED in the tip. This cable can be plugged into the back of the unit and the LED transmitter positioned in front of the device to be controlled. Using this extender did not have any trouble finding a suitable position for the infrared LED, just put it a few feet from the transmitter and already hit the first. The remote control being used by the receiver did not miss any time.
The receiver has a blue LED that indicates it is connected and one blue LED that lights up when it receives the remote control signal. The transmitter, analogously, has a blue LED to indicate operation, and a second blue LED that lights up when it receives the remote control signal at the receiver, to transmit to the device which is connected to it. Strangely this time LED lights without any activity that is occurring with the remote control with the receiver, which may indicate that there is some interference in the frequency of 433MHz. This alleged interference does not disturb the functioning of Transmitter / Receiver Pakite, but can disrupt the operation of the remote control of other equipment that are close to the transmitter due to the crossing of the infrared signals. Here it happened to a digital TV receiver of Visiontec (VT7200E) on a few occasions, but this occurred for a number of factors: the Transmitter Pakite is on the TV to stay at a greater height, digital converter is at the foot of the TV and the remote control VT7200E is a very bad (must have an infrared LED weak) that only works aimed directly pro converter. Hardly others have a combination of factors and also similar interference on the same frequency, then I think this problem is rare. And anyway this is only a problem if interference occurs at the exact moment we are using the remote, and in this case just press the button again.
As in Gadmei, there are no restrictions on the color systems Transmitter / Receiver Pakite. It transmits an input signal as only puts the audio signal in stereo and composite video in analog carrier at the transmitter, and does the opposite receiver. Thus the Transmitter / Receiver Pakite should work on PAL-M, NTSC, or any other system used in color composite video signal.
The Transmitter / Receiver Pakite comes from two sources bivolt, que aceitam entrada de 100-240V 50/60Hz, and provide output 5V 1A. Therefore, devem funcionar em qualquer lugar do mundo sem maiores problemas, desde que haja uma tomada ou adaptador para ligar os plugs padrão norte-americano (those two pins in parallel planes, muito comum no Brasil e ignorado pelo pessoal que fez essa droga de padrão brasileiro altamente incompatível).
Also accompanying the Transmitter / Receiver Pakite two triple RCA cables, one for the transmitter and for the receiver. The manual that comes with the unit is in English, a great advantage for those, I like, can not read Chinese. And who can not read English also need not worry because the installation is trivial and anyone who has ever installed a VCR / DVD will be able to do it.
The Gadmei has 4 selectable channels in the 2.4 GHz band, What is the most you can put in this ISM band using 18MHz channels and nonoverlapping. Some devices have more channels, but using overlay or by using frequencies that can not be used in most countries. The Transmitter / Receiver Pakite offers 8 channels in the 5.8 GHz band, What is more spacious, but the manual does not say what are the frequencies that correspond to each. I even tried to check with the manufacturer, but the friendly service of chinesinha Pakite Nor was this information, then it remains unknown.
To select the 8 channels exist 4 rocker switches at the rear of the transmitter and receiver, that should be with the same combination in both devices. Here comes one more unknown, how to select each channel? As 4 rocker switches give a total of 16 combinations, and all 16 combinations work. So I figured there would be repeated combinations, but in my tests I could not find any repetition. Of course not all tested 120 Combinations of pairs of combinations of different keys, but I tested in combinations not seen that often resulted in equal. So why the manufacturer advertises the product as having only 8 channels instead of 16 channels? Perhaps because the Transmitter / Receiver Pakite offers 8 non-overlapping channels, in other words, the 8 additional channels overlaps parts of the frequencies of the main channels, and that I could observe on the tests, because some combinations of channels showed images and sound noisy but identifiable, showing that they were overlapping channels with some.
Installed or Transmitter / Receiver Pakite, I did the test of 16 combinations (or mostly, I think I have not tested all) and what seemed to me the best was obtained with only the third key down and the other up keys. Curiously, was this configuration that both the transmitter and receiver come. The sound was perfect, the selected channel does not present as inteferências Gadmei presented (estalos not som, loud noise in the image sporadically), But the image has left a little to be desired, There is a small constant noise in the image, no shouting, but enough to be noticed on a CRT TV 20 inches. A noise is lower than in nearly all open channels that receive here, then I would say that the image of Pakite is perfectly “watchable”. But it is worth noting that the Gadmei under optimal conditions (without any interference, all other appliances off) had a completely clean. How this little noise Pakite bother unless crackles and noises in inteferência Gadmei, I will keep Pakite installed.
The tests I mentioned in the last paragraph were done with a distance of about 5 meters only, but with a wall and a cabinet in the path. I then decided to test the transmission with transmitter and receiver placed side by side. To my surprise the noise continued, then I think we can assume that it is characteristic of this product. It is likely that higher quality devices (and more expensive) minimize this problem, but I am convinced that only a transmitter / receiver digital account would solve the problem. Of course the cost of such a household is infeasible, then the alternative for a more perfect would even use cables.
The next test was to a greater distance, of uns 15 or 20 meters with some 4 or 5 walls in the way, some of which would be traversed transversely. The result was that sound and image simply not arrived. It is noteworthy that in a test in those conditions, done 2 years ago, the image of Gadmei arrived somewhat noisy, but arrived. Of course we have to consider that the wave of 2.4 GHz through obstacles more easily than the wave of 5.8 GHz, which has smaller length (~ 12cm to 2.4 GHz and 5.8 GHz to ~ 5cm).
The manual says that the distance for horizontal transmission without barriers PAT-530 is ≤ 200m. This measure is somewhat vague, since 1m is also something less than or equal to 200m. The manual also cites an alleged PAT-520 whose distance for horizontal transmission without barriers is ≤ 100m, and a PAT-540 that the measure is ≤ 300m. But apparently these models were not released, because there is nothing about them on the manufacturer's website. Anyway it is expected that in practice the maximum distance is far from it.
I can conclude that the Transmitter / Receiver Pakite is a good stop-gap for those who want to make a point of slave cable / satellite or something wirelessly. Especially for those who already have other devices using the 2.4 GHz band and need a solution that uses less congested frequencies, As is the case of 5.8 GHz. It is not the recommended solution for those who want a perfect picture or for longer distances or with many barriers.
And now I will speak of purchase: She was held on 25/11/2010, submission was made 29/11. The China Post says the package left China in 06/12, and only in 19/01/2011 is that it appeared as received in Brazil, and 3 days after, in 24/01 it was delivered, no taxes. The package staying 1 months stopped in Brazil (probably blame the IRS) unfortunately is common this time of Christmas. Now things appear in January already be normalized, with packages arriving back in 2 or 3 weeks. Here is the tracking China Post:
|item No.||Year||Status||Destination Country||Location||Date|
|RR895907347CN||2010||departure from outward office of exchange||BRAZIL||2010-12-06|
|RR895907347CN||2011||arrival at inward office of exchange||BRAZIL||2011-01-19|
And behold tracking Postal in Brazil:
|24/01/2011 18:35||CSD (Removed)||Delivered|
|24/01/2011 09:12||CSD (Removed)||Out for delivery|
|19/01/2011 14:11||BRAZIL – BRAZIL / XX||Awarded|
|Received / Brazil|
|06/12/2010 08:59||CHINA – CHINA/XX||Routed|
|In transit to BRAZIL – BRAZIL / XX|
|03/12/2010 01:50||CHINA – CHINA/XX||Posted|
The packet came as described “VIDEO KIT”, declared as weight 660 grams, and declared value of $19,78 USD (U.S. dollars two). Despite the box to be somewhat big girl, the package was not taxed.
And I close my article on the Transmitter / Receiver A / V Extender with Wireless Remote Control 5.8GHz Pakite PAT-530 (PAT-530 5.8GHz Wireless A/V STB Transmitter/Receiver with IR Signal Extension Wire Set (Blue)) Here. If you also want to shop in DealExtreme, directly from Hong Kong, click here and good shopping.
Update (10/05/2011): Added a video demonstrating the Transmitter / Receiver A / V Extender with Wireless Remote Control 5.8GHz Pakite PAT-530 (PAT-530 5.8GHz Wireless A/V STB Transmitter/Receiver with IR Signal Extension Wire Set (Blue)):