In this article I present the HDBaseT HDMI Extender Lenkeng LKV375 by Single twisted pair, It works with the Cat5e network cables, Cat6 or Cat7. He has range of up to 70 meters, with transmitter and receiver GO to extend the remote control, and supports resolutions up to 4 k in 30 Hz and 1080 p in 60 Hz, including 48bppp and 1080 p 1080 p 3D.
The acquisition of the HDMI Extender Lenkeng LKV375 was made on AliExpress, shop Shenzhen KeyCube Electronics Co., Ltd.
What is the HDMI Extender Lenkeng LKV375?
This HDMI Extender Lenkeng LKV375 is replacing my Transmitter Set + Receiver Extender HDMI-LINK MI LM-EX11, that suddenly began broadcasting only in resolutions up to 480 p, who knows for what reason.
The function of my Lenkeng LKV375 is to transmit sound and image of the Sky in the room for my room, without any loss of quality, by doing so a slave point, displaying the same main TV channel, but with the ease of being able to change channels right slave, Thanks to the remote control extender, a bonus on the LM-EX11, I didn't have this function.
The LKV375 also serves to extend the signal of any other satellite or cable TV, or any other HDMI source as media players, videogames, computers, etc.
Why did I choose the HDMI Extender Lenkeng LKV375?
When I began to search for an HDMI Extender, I was strongly inclined to acquire another Lenkeng model, the LKV373 V3, It works over TCP/IP, in other words, It can use the existing Ethernet network, What's good for people who don't have as a twisted-pair cable from point of origin to the point a slave, but already has passed network. It is not my case, but the possibility does not cease to be interesting.
Another advantage is that for multiple points slaves is only needed a single transmitter, because receivers can be purchased separately, and the same transmitter to send the signal to all receivers.
But LKV373 V3 has the disadvantage of not transmitting the signal from the remote control. Furthermore, analyzing the best, I noticed that it also has some problems: uses a strong compression in image and converts interlaced to progressive sources, In addition to not transmit encoded audio, as Dolby Digital. There are also reports that it overloads the network and let slow.
For use with video games, the LKV373 V3 also is not feasible because of the latency. Por fim, to use it with single transmitter and multiple receivers with the cables already have exclusively for this, would have to acquire also a good switch, possibly a Gigabit Ethernet.
It's worth mentioning that the LKV373 V3 has functioning completely different from previous versions. Version 3 work with a protocol called HDbitT, and uses the format h. 264, while previous versions work with MJPEG, and has several clones on the market that may or may not have the same operation.
To the problem of LKV373 V3 do not pass the signal from the remote control, now there is a solution that is the model LKV373IR, This Yes including infrared transmitter and receiver.
Discarded IP models, I came to consider the model LKV372, It also uses a single cable cat5e or cat6. It's a cheap, but there is no indication that use any standard known. As I have had problems with the LINK-MI LM-EX11, I thought it best to opt for a more advanced model.
Por fim, the option turned out to be by the Lenkeng LKV375, that follows the pattern HDBaseT, and transmits the signal without loss, as far as audio video, supporting audio also encoded as Dolby Digital. This is possible because he works with the same bandwidth of an HDMI cable 1.4: 10,2 Gbps.
According to the specifications, to LKV375 It is possible to stream video up to Full HD (1080p) in 60 Hz with color depth of up to 36 bits for up 60 meters using cat5e or higher. For 1080 p video 60 Hz with a color depth of 48 bits, 1080p 60 Hz 3D or 4 k x 2 k in 30 Hz, the distance with the cat5e falls for up 35 meters. Using cat6A cable or higher, the distances to 70 meters and 40 meters, respectively.
For those who need more distance, There is still the model LKV375-100, whose range goes up to 100 meters, and 70 meters, in the situations described above.
Note that 4 k resolutions in 60 Hz are not possible, as this requires a bandwidth of 18 Gbps, the HDMI standard 2.0. This is possible with the HDBaseT version 2, but not with version 1 It is implemented in the LKV375. I don't know still no HDMI Extender that employ the standard HDBaseT v2. As the Sky has no 1080 p channels still (the maximum is 1080i and 720 p), then 4 k is probably still far away.
As for the audio, both the LPCM 2.0 as the Dolby Digital 5.1 the Sky work. But the device also supports high-bandwidth audio, as of multi-channel LPCM, Dolby True HD and DTS-HD. The CEC and HDCP protocols are also supported.
The package comes with a HDMI transmitter, an HDMI receiver, a power supply, a transmitter GO, a receiver GO and the instruction manual. The power supply uses the European standard, fully compatible with the Brazilian standard, and can be connected both on the transmitter and the receiver. The energy will be transmitted to the device by the mains cable, dismissing a second power supply.
Typically the transmitter is connected to the HDMI receiver IR and IR receiver will be connected to the HDMI transmitter, so that the signal from the remote control flow of the slave to the main point point. But it is also possible to connect reverse way, causing the signal to go from the main point go to the slave point.
Check out some photos:
HDMI Extender Lenkeng LKV375 operation
Time to put the HDMI Extender Lenkeng LKV375 for work. In my tests, It worked perfectly to make the slave point of Sky, broadcasting in all resolutions that channels using: 480i, 720p e 1080i, with the default color depth 24 bits, and so with the LPCM audio 2.0 as the Dolby Digital 5.1.
As the specifications of the Sky are relatively low, I decided to connect a Blu-ray Player at the source, and I was able to test other resolutions, including 1080 p, 3D, and color depth of 36 bits, the TV identifies as 12 bits, as regards the amount of bits per channel, and are 3 channels: red, green and blue – RGB. Just could not test 4 k resolutions because I don't have a TV or sources to support such a resolution.
My installation uses a cat6 cable segment and a segment of cat5e cable, both connected with a Amendment. I don't know exactly the total distance, but I think some 30 meters. Network cables pass through the conduits of the House without major problems, something that certainly wouldn't be possible with a HDMI cable, given the thickness of the cable. Furthermore, network cables are easily crimped home, While installing a plug HDMI doesn't look like a trivial task.
Check out some photos from the HDMI Extender Lenkeng LKV375 operation:
See also this video of unboxing and the operation of the HDMI Extender Lenkeng LKV375:
Tracking and Summary Table
These are the tracking information package, which was not taxed:
|27/09/2016 17:49||CSD [Removed]||Delivery Effected|
|27/09/2016 10:10||[Removed]||Out for delivery to the recipient|
|06/09/2016 10:47||INTERNATIONAL UNIT CURITIBA – CURITIBA/PR||Awarded|
|Received / Brazil|
|In transit to International Treatment Unit – BRAZIL / BR|
And the purchase summary table:
|Product Name:||HDBaseT HDMI Extender Lenkeng LKV375 by Single twisted pair|
|Name Original:||Real LKV375 4 k * 2 k 3D 1080 p Hdbaset HDMI Extender Over Cat Cable Single Up To 70 m Extends HDMI GO Remot Repeater Cat5e/Cat6/Cat7|
|Store:||AliExpress | Store: Shenzhen KeyCube Electronics Co., Ltd.|
|Current value:||US$ 100,00|
|Payment Method:||Credit Card Visa International|
|Shipping Type:||China Post Registered Air Mail|
|Package Home Country:||China|
|Time in Transit:||33 days|
|Declared content:||AV extender|
|Type Marked Content:||Other|
|Declared Value:||EUR 15.00|
The HDMI Extender Lenkeng LKV375 It is easy to install, does not require settings and works very transparent. The HDbaseT Protocol seems solid and this should avoid incompatibilities with cables, signs, etc. The manufacturer Lenkeng also looks solid and specializing in this type of solution.
To the specifications of the Sky, the LKV375 gives more than enough, Since the channels only reach 720 p and 1080i. Despite the current decoders support 1080 p, still no resolution channels. Anyway, the LKV375 are you ready for 1080 p, with high color depth.
The 4 k, Although not tested, will be limited to 30 Hz in this device. In this way, I believe that when TV-cable/satellite 4 k is reality, the LKV375 need upgrade. But I think we're still far from that, Since even the HD channels are still minority and many are still only available in SD.
And I'm ending here the article on HDBaseT HDMI Extender Lenkeng LKV375 by Single twisted pair, with a positive recommendation for the product and for the store Shenzhen KeyCube Electronics Co., Ltd. Share this article with your friends if you liked ;). If you also want to shop in AliExpress, directly from Hong Kong, click here and good shopping.