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nov 14 2016

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HDBaseT HDMI Extender Lenkeng LKV375 by Single twisted pair

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 in 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:

Package with the HDMI Extender Lenkeng LKV375 HDBaseT

Package with the HDMI Extender Lenkeng LKV375 HDBaseT

Unpacking the package with the Lenkeng LKV375 HDBaseT HDMI Extender

Unpacking the package with the Lenkeng LKV375 HDBaseT HDMI Extender

Lenkeng LKV375 HDBaseT HDMI Extender in your package

Lenkeng LKV375 HDBaseT HDMI Extender in your package

Lenkeng LKV375 HDBaseT HDMI Extender in your package

Lenkeng LKV375 HDBaseT HDMI Extender in your package

Lenkeng LKV375 HDBaseT HDMI Extender in your package

Lenkeng LKV375 HDBaseT HDMI Extender in your package

HDMI Extender transmitter and receiver Lenkeng LKV375 HDBaseT

HDMI Extender transmitter and receiver Lenkeng LKV375 HDBaseT

Power supply, Manual and cables GO Lenkeng LKV375 HDBaseT HDMI Extender

Power supply, Manual and cables GO Lenkeng LKV375 HDBaseT HDMI Extender

All items Lenkeng LKV375 HDBaseT HDMI Extender

All items Lenkeng LKV375 HDBaseT HDMI Extender

Instruction manual Lenkeng LKV375 HDBaseT HDMI Extender

Instruction manual Lenkeng LKV375 HDBaseT HDMI Extender

All items Lenkeng LKV375 HDBaseT HDMI Extender

All items Lenkeng LKV375 HDBaseT HDMI Extender

HDMI Extender transmitter Lenkeng LKV375 HDBaseT

HDMI Extender transmitter Lenkeng LKV375 HDBaseT

HDMI Extender transmitter Lenkeng LKV375 HDBaseT

HDMI Extender transmitter Lenkeng LKV375 HDBaseT

HDMI Extender transmitter Lenkeng LKV375 HDBaseT

HDMI Extender transmitter Lenkeng LKV375 HDBaseT

HDMI Extender receiver Lenkeng LKV375 HDBaseT

HDMI Extender receiver Lenkeng LKV375 HDBaseT

HDMI Extender receiver Lenkeng LKV375 HDBaseT

HDMI Extender receiver Lenkeng LKV375 HDBaseT

HDMI Extender receiver Lenkeng LKV375 HDBaseT

HDMI Extender receiver Lenkeng LKV375 HDBaseT

Power supply Lenkeng LKV375 HDBaseT HDMI Extender

Power supply Lenkeng LKV375 HDBaseT HDMI Extender

Power supply Lenkeng LKV375 HDBaseT HDMI Extender

Power supply Lenkeng LKV375 HDBaseT HDMI Extender

Power supply Lenkeng LKV375 HDBaseT HDMI Extender

Power supply Lenkeng LKV375 HDBaseT HDMI Extender

HDMI Extender IR receiver Lenkeng LKV375 HDBaseT

HDMI Extender IR receiver Lenkeng LKV375 HDBaseT

HDMI Extender IR Transmitter Lenkeng LKV375 HDBaseT

HDMI Extender IR Transmitter Lenkeng LKV375 HDBaseT

Lenkeng LKV375 HDBaseT HDMI Extender and its packaging

Lenkeng LKV375 HDBaseT HDMI Extender and its packaging

Instruction manual Lenkeng LKV375 HDBaseT HDMI Extender

Instruction manual Lenkeng LKV375 HDBaseT HDMI Extender

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:

Receiver to go along to the slave point

Receiver to go along to the slave point

Tv slave point fine-tuning the Sky

Tv slave point fine-tuning the Sky

Tv slave point fine-tuning the Sky

Tv slave point fine-tuning the Sky

Tv slave point fine-tuning the Sky, channel in 1080i

Tv slave point fine-tuning the Sky, channel in 1080i

Tv slave point fine-tuning the Sky, Canal in 720 p

Tv slave point fine-tuning the Sky, Canal in 720 p

Slave point tuning Sky, with Dolby Digital audio detail

Slave point tuning Sky, with Dolby Digital audio detail

Slave point running Blu-ray 3D

Slave point running Blu-ray 3D

Slave point running Blu-ray 3D, with color depth of detail 36 bits and 3D signal

Slave point running Blu-ray 3D, with color depth of detail 36 bits and 3D signal

HDMI transmitter close to the receiver of the Sky

HDMI transmitter close to the receiver of the Sky

HDMI with receiver on TV of the slave point

HDMI with receiver on TV of the slave point

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:

Data Local Situation
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
01/09/2016 17:36 NETHERLANDS Routed
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.
Value: US$ 100,00
Current value: US$ 100,00
Payment Method: Credit Card Visa International
Shipping Type: China Post Registered Air Mail
Shipping Fee: Free
Package Home Country: China
Purchase Data: 21/08/2016
Submission Date: 25/08/2016
Data Delivery: 27/09/2016
Time in Transit: 33 days
Declared content: AV extender
Type Marked Content: Other
Declared Value: EUR 15.00
Taxed: Not
Taxable Value: -
Tax Value: -

Final Considerations

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.

About the author

Skooter

Skooter is a computer scientist and the founder of Skooter Blog. He is interested in everything related to technology and he likes to save money by making his purchases directly from abroad.

Permanent link to this article: http://www.skooterblog.com/2016/11/14/extensor-hdmi-lenkeng-lkv375-hdbaset-por-par-trancado-unico/

3 comments

2 indications

  1. 1
    Wagner

    Hello, I am interested in buying this product also, but I don't understand exactly how is the connection of cables, How is the connection of the sky receiver to the transmitter? and simply place the receiver hdmi output and connect the other on tv? I can watch in the 2 TVs at the same time? Thank you.

    1. 1.1
      Skooter

      The Sky receiver connection to the transmitter is via HDMI. As the Sky there's only one way out, You must use a splitter HDMI.
      The receiver is as you said, just plug the HDMI cable into the output of the receiver and the TV input.

  2. 2
    incomin

    Hi~Hello~
    I was very helpfull this post.
    Please~I want just need buy ir tx cable in box.
    So i want know that cable sell company or information.
    I wish is it possible~
    Thank you~

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