External Antenna - WIFI, GPS, GSM / UMTS - Nexus 7 Accessories

Hello dear XDA-Team / User =)
I use my Nexus 7 as a CarPC and i would use some externel antennas für Wifi, GSM, UMTS, GPS.
i found this shark antenna -> Calearo Shark Quad Multifunktions Antenne AM/FM - GSM/UMTS - GPS - WIFI
is it possible when i remove the back cover from the nexus 7 and connect the antenna to the device?
whats with the GPS voltage, discriped in the antenna manuel?
thank you.

Or any tablet with external antenna jacks?
I would also be interested to hear if there are any good quality tablets out there designed with built-in external jacks for a similar application.
All of GPS, GSM, and 3G/4G are of interest, but particularly GPS and 3G/4G
Sources like alibaba in bulk quantities would also be OK.
The unit doesn't have to look particularly good, but has to be of good quality.
Will probably start a separate topic on this as well as a 'generic' query.

Just use a USB wifi adapter.

r00t4rd3d said:
Just use a USB wifi adapter.
Click to expand...
Click to collapse
for everything? linky?

Related

802.11 via XDA connector ?

They have GPS receivers that work through the bottom cradle connection for IPAQs they also have other devieces like keyboards that work like this.
Would it be possible to develop a 80211 dongle that could click into the
cradle port? is anyone working on this? is there anyone that would have
enough knowledge to beging working on this i could contact. I would love to get 802.11 for this baby.
Dan said:
Would it be possible to develop a 80211 dongle that could click into the cradle port? is anyone working on this? is there anyone that would have enough knowledge to beging working on this i could contact. I would love to get 802.11 for this baby.
Click to expand...
Click to collapse
No, sorry. The XDA connector on the bottom supports USB and serial. However, the USB will only do 'Slave Mode', i.e. act as a USB device towards a computer. There are USB 802.11 devices, but they work as devices as well, and thus need a 'Master' to talk to. And there's no serial 802.11b transceivers out that we know of.
You could conceiveably build a USB device that plays the master role and feeds the IP through just like ActiveSync does, but nobody has done that yet. For the manufacturers this shouldn't be that hard, given the amount of spare processing power on these 802.11 tranceivers. (And while we're at it, we might as well incorporate a GPS connected to the serial port...)
hmm
so this won't be something that a little hacking group such as XDA developers would be capable of?
Hi
In a short time a wireless lan card will be available which you can plug into you SD Slot. See http://www.sychip.com/wlan-module.html
See ya
Mick
Helllo.
I don´t think, that the wireless lan card will work in the XDA. In the technical PDF there is a picture that shows a SDIO-Interface.
XDA still do NOT have a SDIO-Interface.
Regards
Stefan
hold on, why do u need a wireless lan card? I thought the xda was a wireless device, surely it ought to have wireless connectivity built into it? If you had a corporate wireless network, cant it just be configured to connect?
Of course it has wireless support, using GSM and/or GPRS and infrared. But WLAN support is something entirely different, and that is definitely not included.
Shouldn't be too hard to design a WLAN adapter acting as an USB master though. With the pass-through functionality built into the activesync software it has definitely been shown that the USB connection can be used for network access.
bamse said:
Shouldn't be too hard to design a WLAN adapter acting as an USB master though. With the pass-through functionality built into the activesync software it has definitely been shown that the USB connection can be used for network access.
Click to expand...
Click to collapse
Yo bamse,
Ever want to be very, very popular ? You would make hero of the month on our charts, that's for sure...
What about these guys:
http://www.datahunter.com
I know it's RS232 and not USB, but apart from that the Liberator should do the trick almost straight away, and they also advertise a module that could be built into a sleaker package:
OEM 802.11 WLAN Mini-Modules
OEM and ODM manufacturers can incorporate FCC ?Modular? pre-certified 802.11b mini-modules into their products. The Data Hunter 802.11 mini-modules have the Operating System Wireless LAN software drivers built-in. Interface options are the ones Engineers need, including high-speed async logic-level or RS232, SPI processor interface, USB and full Ethernet TCP/IP. No additional FCC certification required for the modular 802.11 data radios. Start shipping integrated WLAN immediately. Includes single antenna for bulkhead mount or dual diversity antennas
bamse said:
What about these guys [...]
Click to expand...
Click to collapse
I could be wrong, but from their site I get the strong impression none of it is done, and they'll start work on it the minute someone orders a few thousand.
Also: they base everything on the Compact Flash 802.11 cards with some extra hardware, which is unlikely to pretend it's a PC running ActiveSync straight out of the box, so some extra work is in order.
What we need is a CF 802.11 card that comes with an SDK for adding your own code. No need for extra parts and power consumption: the card should have enough spare cycles to pretend it's ActiveSync on Windows plus the USB. (Or serial at 115.200 if that's somehow easier). Then all we need after the two manmonths of coding is a nice plastic stick-one case and we're done...
Ok, how about this then:
http://www.tuanistechnology.com/products/avaya/converter/
Or this:
http://www.autodnc.de/ctwlani.htm
You'll find a whole bunch of them out there, all serial and 115200bps, but none of the companies seem to have identified the PDA-owners a market for their produkts.
I'd say most of these products use way to much power for PDA use.
Really, let's not build stuff that's already on the PC or CF card to begin with.
Anyone found a way to access 802.11b yet? I see that Linksys has the WCF12 (The Wireless CompactFlash Card installs directly into your Pocket PC using a CompactFlash Type I or Type II slot). I think that fits the IPaq. I need one for the SX56.
I saw some creative ideas above. Anybody try matching the pin-outs yet??
:roll: Sigh. Read my lips. It won't work. It's not a matter of "pin-outs." It's far, far deeper than that on both hardware and software.
And really, would you want to access an ethernet network at 115k??? What for?
LumpiStefan said:
Helllo.
I don´t think, that the wireless lan card will work in the XDA. In the technical PDF there is a picture that shows a SDIO-Interface.
XDA still do NOT have a SDIO-Interface.
Regards
Stefan
Click to expand...
Click to collapse
While I doubt that anyone will, it ought to be a small task to design a Bluetooth interface that will work with SDIO or SD either as a polled device or memory mapped I/O. For Bluetooth this should produce acceptable results --- for 802.11b clearly it would not.
It won't work. It's not a matter of "pin-outs." It's far, far deeper than that on both hardware and software.
And really, would you want to access an ethernet network at 115k??? What for?
Click to expand...
Click to collapse
It certainly seems doable. What is the limitation on the SX56 that does not exist on iPaq? And since I struggled through years and years of 36K dialup before DSL, for the limited data access needed for a PDA, 115K seems like heaven. Noone is going to treat it like a workstation. But access to remote data has a wide range of applications.
The iPaq has an expansion port, the XDA does not.
Carlos:
If you have a quick look at one of the links I have provided above you should find that there are a couple of solutions available for anyone who would like to connect a 802.11 device to a serial port. They may be a little bulky and power hungry, but that can surely be taken care of.
There will be 256MB SDIO card with built-in 801.11, right? What about a 256MB SDRW card with built-in SDIO and USB-host? With the USB/serial/power/peripheral connector of the Qtek sitting next to the SD-slot you could easily build a device that connects to both "ports". Wouldn't it be nice?
wi-fi stuffs for Qtek
Hi Bamse,
Could you tell me what exactly that I would need to purchased
to have my Qtek works with wi-fi? Thank you.
None of it exists today. Everything posted so far is theoretical. It will never exist. There's no market for it.

[Q] wifi antenna external?

was wondering if there was some kind of external wifi antenna that maybe uses the usb/mini usb. most of the ones in the local electronic stores are for windows plat forms and im pretty sure wont work.
Probably not because they would require drivers.
Smart repeater
Ronyx said:
Probably not because they would require drivers.
Click to expand...
Click to collapse
Doesn't phyically connect to your tab, but, if your looking to extend your range/reception in your house you could use an amped Wireless Smart repeater http://www.ampedwireless.com/products/sr300.html. I actually chose the access point version http://www.ampedwireless.com/family/accesspoints.html for my house to improve the wireless signal on the second floor. Works great.
The difference between the access point & repeater is the a/p requires a phyical connection to the network & the repeater doesn't. Max throughput on a/p is 300mbps & repeater is 150mbps (since it has to transmit wirelessly to your existing router & wireless clients).
thanks, i definately didnt want to have anything hangin off my tablet, kinda defeats the purpose, i like the repeater, ill check it out
Cheap mode: any router that supports DD-WRT - just put it into 'bridge' mode.
Fancy: the new Cradlepoint CTR35 can work as wifi repeaters as well as a hotspot

External Antenna: Experiment

1 - Unmount Nexus 4
2 - Unmount router
3 - Disconnect internal antenna
4 - Connect antenna router.
RESULTS:
Internal Antenna: -51dBm 31asu
External Antenna: -69dBm 22asu
imageshack.com/a/img537/5858/AvqyxX.jpg
HSPA connects but the WiFi is not working, why?
If I unlock the network lte I can improve connection lte?
Thanks for your answers.
That connector is for one of the cell radio antenna, not the WiFi radio.You're also getting worse cellular "reception" as the WiFi antenna is not designed for cellular frequencies nor balanced or impedance matched.
The WiFi radio doesn't have an external connector, just the two pressure-pins on the left side that connect to the microstrip antenna adhered to the backside of the rear case. No antenna means you'll get nearly zero or poor WiFi reception.
Indeed. Notice the minus sign on those dBmW values. The higher the number part (when the sign is negative), the less the signal.

Possibility Of Getting GPS Working?

Possibility of getting GPS working?
What are the chances of getting GPS working on the Fire? The info thread has a post saying the chip in it is a MediaTek MT8127 and links to the spec page which says it has GPS on the chip, as well as an FM receiver. Curious if it requires dedicated antenna connections that aren't there on the Fire, or if it's ready to go hardware-wise and just requires something on the software side? Would be pretty awesome to get it working and use these as a dedicated car tablet, especially now that cm12.1 is booting on it thanks to ggow, and the upcoming Black Friday $35 price.
GPS would require it's own antenna (plus a couple of supporting components) since it's a different frequency than wifi/bluetooth. So even if the chip includes GPS we can't use it.
Tho in your scenario of a dedicated car tablet you should be able to use a cheap usb GPS dongle. The fire has USB host.
Use TetherGPS Works great.
Tobb555 said:
Use TetherGPS Works great.
Click to expand...
Click to collapse
an app for GPS i would never have thought of such LOL
unfortunately i personally don't need GPS :silly:
Thanks though

Brands that make less problems with custom GPS software

Witch "Brands" of headunits make less problems with use of custom GPS-software like TomTom, Sygic, Desnav and so? It seems like all sellers want to sell their own GPS-software...
Need DAB+ radio too. Have those DAB-boxes better reception than those DVB-T dongles with SDR with same antenna? And can those dongles be connected via a USB hub since i want a separate USB input for playback of mp3s too.
Thanks
b139b said:
Witch "Brands" of headunits make less problems with use of custom GPS-software like TomTom, Sygic, Desnav and so? It seems like all sellers want to sell their own GPS-software...
Need DAB+ radio too. Have those DAB-boxes better reception than those DVB-T dongles with SDR with same antenna? And can those dongles be connected via a USB hub since i want a separate USB input for playback of mp3s too.
Thanks
Click to expand...
Click to collapse
Waze and Co-Pilot work without any problems on all units. Why fiddle around with HW when the SW works?

Categories

Resources