Homemade tablet Wi-Fi antenna. How to connect an external GPS antenna to your tablet
Therefore, in this review I will minimally touch on the adapter itself, and will talk about improving the performance of a 10" tablet Zenithink ZT-280 C91 by replacing the standard WiFi module with this one.
Review contains detailed instructions with photos " close-up"the whole process...
Let's start with the background. After purchasing the above tablet PC, it turned out that stable reception WiFi networks practically none, because in the immediate vicinity of the access point, the signal strength icon showed only one stick, while all other devices showed excellent reception. Next, this problem was studied by reading various thematic forums and reviews of the specified “tablet”. It turned out that this property is inherent in all “tablets” of this model and there are several ways to solve the issue. But first, the “tablet” needs to be disassembled. How to do this is described in detail. Below is a photo of the “device” with the back cover removed: Built-in WiFi module located in the lower right corner of the board: 
So, the “tablet” has been disassembled, the module has been found, and let’s begin to improve reception.
First way- the simplest: upgrading the WiFi transceiver antenna by soldering a piece of foil fiberglass to it (taken): They write that it helps, but in this particular case there is a difference in reception WiFi signal not found.
Second way- replacing the WiFi module. This path is also described in detail. Not all are suitable for replacement WiFi adapter s, which ones are suitable were discussed. There is also a link to the module under review, only for DX, but it is slightly more expensive there, so it was ordered for TD.
A few photos of the received adapter: 
To connect it was used standard USB"lace" on back PC cases: 
Only he had to modify it a little: 
Modified crime scene: 
Next, carefully unsolder the standard module: 
Solder the “modified USB cord”: 
Because The standard WiFi module has a 3.3 volt power supply, and the one received from TD has 5 volt power, then in place of the standard one we solder only ground, D+ and D-, we take +5 volts from the USB connector: 
The new module, together with the “modified cord,” is precisely placed between the battery and the board of the “tablet”: 
That's what came out of it: 
When finishing the work we put back cover in place, turn on the “tablet” and check the reception quality.
This method helped the tablet user. The reception level has become the same as that of other devices.
Thus, I can recommend the reviewed adapter for purchase, due to good characteristics and small sizes, allowing you to “shove” it even into the case of a “tablet”.
The tests involved a 10* AInol tablet
Denis and Alexander
The goal is to achieve the best Wi-fi reception on Chinese tablet replacing the standard factory receiver antenna with a homemade one Kharchenko antenna, and also on a 5Dbi antenna from the Netis router. See what happened in the video!
Also see my other reviews on mob. phones and gadgets:
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Save money by buying cashback on Ali https://epn.bz/joinus/?i=ff2b6 How to improve a wifi antenna. How to strengthen the Internet signal at the dacha. Homemade Wi-Fi gun from Kreosan. My tests and reviews #1. How to make a TV antenna with your own hands? / how to make antenna for TV at home? Homemade WiFi adapter for RTL8188. Reuse Wi-Fi from TABLET. How to connect Wi-Fi module from tablet to computer. Outdoor antenna to boost the 3G signal with your own hands. FORBIDDEN ANTENNA FOR FREE... how to make it yourself helix antenna Wi-Fi. How to make an antenna for cell phone. Super WiFi from unnecessary trash do it yourself / Homemade super Wi Fi from rubbish. How to do free Internet. Strengthens the Wi-Fi signal by 10 times. 3g Internet in the Village \ POWERFUL STRENGTHENING OF CELLULAR SIGNAL. EFFICIENT Wi-Fi ANTENNA WITH YOUR OWN HANDS FREE INTERNET in 3 hours!!! How to strengthen wifi signal router. Homemade Wi-Fi antenna.
Articles and Lifehacks
To strengthen the signal that is lacking in the entire large house and increase the range Wi-Fi work, is made from a regular CD box. Although electronic equipment Nowadays it’s at its best, and the words “router” and “Wi-Fi” won’t surprise anyone; homemade craftsmen are constantly trying to come up with something of their own.
How to make a wifi antenna for a tablet computer with your own hands?
1. You need to take a standard plastic box designed for 25 discs.
2. At a distance of approximately 18 mm, you need to cut off the spindle and, using a file (or a round needle file), make slots on it in order to then attach the double diamond.
3. Then you need to make a double diamond from a copper cable with a diameter of 2.5 mm. To do this you will need about 30 cm of copper wire. You need to bend a rhombus from a stripped piece of wire, strictly maintaining the size from its middle to the middle of approximately 30 millimeters. The result is double square with the same dimensions. The ends of the wire should be soldered and tinned, preparing the place for the planned cable connection.
5. Then, using a soldering iron, you need to solder the cable, and to the bottom of the box with regular glue (glue gun) you need to attach a CD disk designed to reflect the signal.
6. In addition, you need to fix the double square on the spindle (using a glue gun), and secure the cable with reverse side boxes. DIY Wifi antenna for tablet is ready.
7. The final step is to connect the manufactured structure to a wifi router.
Features of handmade production wifi antennas for tablet
The main requirement for the manufacture of such an antenna is that the distance between the reflective layer and the copper wires must be strictly maintained and be 15 mm.
Experienced specialists or self-confident craftsmen can unsolder the factory antenna and carefully attach a homemade one in its place. The procedure must be carried out carefully so that thin conductors do not peel off from the board when high temperature. The power of such a seemingly simple design will surprise any user no less than that of Wacom.
It is necessary to pay attention that the copper wires should not touch each other when crossing each other. To avoid oxidation, the manufactured structure must be varnished. Having assembled the antenna with your own hands, you need to tune it to the signal source according to best quality and range of transmitted data. It is, of course, easier to set up using microwave measuring devices.
All modern tablets and smartphones have built-in GPS, but they cannot be compared with full-fledged navigators. Gadgets cannot always pick up satellites in difficult reception conditions. This happens under different conditions:
- The windows in the car are covered with a special coating, which impairs signal reception.
- The tablet cannot be placed under the windshield.
- Limited visibility – this applies to special equipment.
But there is a simple way to bring your tablet as close as possible to a full-fledged navigator - install an external GPS antenna. Some motorists turn to service centers, but why pay if you can do the work yourself.
Reference! The external antenna is housed in a compact box, the size of which usually does not exceed half a matchbox. A shielded cable comes out of the box; its length depends on the model, but usually the cable is 3-3.5 meters. A special connector located at the end of the cable is connected to the signal receivers, in our case, to the tablet. The antenna can also be connected to a smartphone or computer.
Installation process
When choosing an antenna, you need to explain to the seller what device the amplifier will be used for GPS signal. Modern models can be connected not only via USB, but also via Bluetooth. And now to the connection:
- The ideal solution for your smartphone would be a GPS antenna that connects to the device via Bluetooth. All data will be transmitted via the protocol. The advantage is that you won't need any additional connectors or modification.
- Due to the fact that the tablet already has a navigation application, you do not have to make new settings.
- Also external receiver may have a USB/PS2 connector. This interface is usually used personal computers, laptops, but there are exceptions. As in the first case, you only need to connect the antenna to the device.
Rarely, but there are tablet models where there is no USB input. In this case, it is worth purchasing an external GPS bluetooth antenna. Increased efficiency Such an antenna can be explained by the presence of an autonomous power source. It is also important to secure it correctly. Some motorists take it to the roof, others attach the modifier under the glass. In any case, with external GPS With an antenna, your tablet will work no worse than a separate navigator for a car.
tryber, ";">tryber | 06/11/2012 14:45
I can’t see the network through the wall at all. Eken 256 iron, exactly like this from the inside. I'll try to follow your advice today. If you know the exact frequency of the transmitting point, you can accurately calculate the antenna. I'll try it now, of course I'll report back later.
Added later (at 17:12 06/11/2012):
Tried it, no change. I used a copper wire with a diameter of 1.5mm and placed it perpendicularly on both sides of the power button and at the bottom of the tablet. The result is the letter (G) if you hold the tablet vertically. Maybe the network is closed or the signal is quite weak. I can’t check the second laptop, I went on vacation with my daughter, but there is no WiFi on mine. I'll try in open networks I'll unsubscribe.
tryber, ";">tryber | 06/12/2012 00:55
Things like this, I unsoldered this Wi-Fi whistle and pulled it out of the tablet. The tablet works without it for now (since I use it as a reader at night, I don’t think it needs Wi-Fi). Soldered to the module usb connector and connected it to the laptop. On the Internet I downloaded firewood Ralink 802.11g WLAN V1.0 USB VID_148F&PID_2070 installed and Wi-Fi worked. The network sees normally as with the add-on. with or without an antenna. The output module and antenna are not in use, apparently the voltage in the tablet is too low. Tomorrow I'll check the voltages and current consumption, then we can say for sure.
Comments: 5 | tryber53(bсh)gmail.com | Registered: 2012-06-11
tryber, ";">tryber | 06/12/2012 12:36
Yes, thanks, but I did it quickly, just soldered the USB to the module and everything worked. Only in XP I made up my mind and demanded firewood. Automatic search in all variations it did not give results, I had to slip it in instead of rt2070-rt2870, in short everything works fine, but the speed of 802.11 G is (speed) in the literal sense of the word. I don’t know, I’m used to at least 100mbi/sec. As for consumption, with my 1500 mA indicated on the Akum, spending 200 mA only on WiFi is cool and blasphemous. The map is like this: Turn on = 490 mA System loaded brightness minimum Wi-Fi off 420-430 mA MP3 playback 500-430 = 70 mA Wi-Fi = 590-630 mA Display brightness max + WiFi = 860 mA. And it didn’t turn on anything else, I think the browser will load the battery to capacity. In short, with a battery capacity reserve of +-70%, and this is almost new, a maximum of 1 hour of operation with WiFi turned on outdoors on a clear day. Yes, I noticed from the surges of current that it seems that Wi-Fi doesn’t care whether it’s turned on or not, it is periodically consumed, apparently it works in hidden mode:(. There is a known case of updating the firmware of the Chinese Weike 502. And these are not stories, this happened to me, the 502nd tried to flash nothing worked, I put it aside. Then after a while I think I’ll charge it and try again, I connected it to the laptop, it worked in Linux Mint 9 Isidora, in the evening I think it’s time to flash it, let me think, I’ll take a look and see if I’ve at least somehow decided on Linux, I’m still watching buzz, and before Stupidly, neither Windows nor Linux saw it. I turn off the player, turn off the Internet, reboot into Windows, connect the player and, lo and behold, it’s determined and everything works, like this.
Comments: 5 | tryber53(bсh)gmail.com | Registered: 2012-06-11
Ahio, ";">Ahio | 05/19/2013 14:51
Thank you for the article! I also have a problem with the wafer on the tablet, but the module is different, can you tell me where I can solder another wire? In general, apparently, one is already soldered, but it is of no use, the signal bounces around and is poorly received even close to the router. 
What can you do in general? in this case to improve the signal? Buying a USB adapter is probably not an option - it won’t work without firewood.
Thank you!
Comments: 1 | Nimrayel(bсh)gmail.com | Registered: 2013-05-19
admin, ";">admin | 05/19/2013 22:56
You have both wires already soldered. You can try to solder an additional copper wire (20 centimeters) and lay it around the perimeter of the tablet body.
sokol74, ";">sokol74 | 06/12/2014 21:24
Hello. Tell me where I can generally connect the antenna for this device. I did not find a separate module. The board is one piece. I still don’t understand where the module is located. Digma tablet IDnD73G
Added later (at 21:32 06/12/2014):
Comments: 1 | legend1-2(bсh)mail.ru | Registered: 2014-06-12
admin, ";">admin | 06/12/2014 21:33
It's hard to say without seeing the schematic/board. Take a photo of the board on both sides and send it.
Comments: 1653 | Site administrator