MIFI LTE very slow

belgianfr · 2019-07-20T15:27:41.805Z

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Can someone tell What 1, 2 and 3 are? WIFI OR LTE
If I plug cable 4 to plug 2 the LTE no longer works.

Thanks

alzhao · 2019-07-20T15:32:02.202Z

1 and 2 are for LTE because it needs two antennas for LTE.

What is the external antenna you are attached to? LTE or WiFi?

I saw that you keep the router powered on. When you change antenna you should always turn it off to protect the radio.

belgianfr · 2019-07-20T19:36:34.991Z

The external antennas are from the AR-150 and it does make a difference, it was on to get the signal strength . What is 3 for? And is 4 the internal LTE antenna?

What is the external antenna you are attached to? LTE or WiFi? I guess there are WIFI!

Johnex · 2019-07-20T20:37:02.156Z

On the Mifi there is no external Wifi antenna. The antenna is the small area on the left side of your image on the board that has no green on it.

You have basically connected 2 Wifi antennas to the 4G module, that will not give you good reception and will most likely burn up the module too.

belgianfr · 2019-07-20T20:39:19.799Z

I removed them until I get decent and correct antennas for it. But what is the third plug, labelled 3 for?

Johnex · 2019-07-20T20:42:28.346Z

The module has 3 connectors, Main, Diversity and GPS. You can attach a GPS antenna to the module and get a signal for position. Not recommended as it is a very basic feature, not supported by GL and very weak.

You can ignore the GPS connector and just use the Main + Diversity.

You need to order 4G antennas if you want better 4G reception, you can’t just use any antenna, it must be 900mhz, 1800mhz and 2100mhz tuned.

Also as Alfie wrote, with wireless devices, you must NEVER power it on without an antenna. The module will give out power, and since there is no antenna to send the power out from, it will send the power back to itself, burning up. For testing on a bench with power on, the correct way is to use a “dummy load” plug.

belgianfr · 2019-07-20T20:48:05.215Z

Ah OK! I was curious on the GPS. But I did not know about the power out! Thank you! One last thing, I removed the external antennas and plugged the wire labelled 4 back to plug 3 is that correct?

And do you have any suggestion on the antennas that are worth getting? Or will these work?
https://store.gl-inet.com/products/2dbi-wi-fi-antenna?variant=12121088950366

Johnex · 2019-07-21T13:12:12.571Z

Yes those would work. You want to get 2 of them to use the diversity of the 4G Module.

You can also find some antennas on amazon too, just find 4G LTE antennas, up to 5dbi.

You are in Europe. If you want to get the absolute best signal possible, you can find what 4G bands your operator is using, and what frequencies, then get an antenna that can handle only those frequencies. Antennas that are only made for 1 frequency are much better than antennas that are made to handle a few different ones. So you could have 1 antenna in the Main connector for for say 2100mhz and another in the Diversity connector with just say 1800mhz (this will depend on your frequencies of your operator ofc):

belgianfr · 2019-08-26T16:19:41.597Z

I have received the antennas and according to GL the cable hooks up to pin 3 see above. I want to hook up the second antenna but which pin? Since the instructions are not consistent.

Johnex · 2019-08-26T16:31:19.376Z

You connect one to the u.fl connector named “Main” and the other to the connector named “Div”. Nothing goes in the GNSS port.

belgianfr · 2019-08-26T16:50:51.803Z

Sorry I did not see the labels.

Ilinsky · 2019-08-27T04:45:10.768Z

My mifi give me 5mbps, can I return it?

belgianfr · 2019-09-21T10:49:39.665Z

Now I have the antennas installed 2 of them! Do I need to have them connected at all time while the unit is ON? If not will I run into the risk of burning out the chip?

Johnex · 2019-09-21T12:11:34.945Z

You must have the main antenna connected, the diversity is optional.

clubb1ng · 2019-10-15T07:31:26.690Z

Hello Johnex,

can you please recommend two antennas for mit MiFi.

This are my Cell Details:

|Cell Identifier|3337741| |—|—|
|System Subtype|LTE|
|PCI|24 (8/0)|
|EARFCN|3350|
|Maximum Signal (RSRP)|-66 dBm|
|Direction|N (345°)|
|First Seen|Di. 18. Dez. 2018|
|Last Seen|Di. 24. Sept. 2019|
|Bandwidth*|20 MHz|
|Uplink Frequency|2560 MHz|
|Downlink Frequency|2680 MHz|
|Frequency Band|IMT-E (B7 FDD)|

Kind regards

Johnex · 2019-10-15T17:55:24.201Z

If you are sure that you are only using Band 7 (B7 FDD) then something like this will work:

https://www.amazon.com/VizGiz-B593S-850-Wireless-External-Connector/dp/B07C9RCFXD/

Just search for a 4G antenna that can handle 2600mhz.

clubb1ng · 2019-10-16T16:22:19.183Z

Thanks!

I think this is right. I use the o2 provider in germany. I got this from cellmapper.

The seller doesn’t send to Germany.
Can you send me a link from a seller who ships to Germany please?

My problem is: I have read that you recommend to use a antenna that only supports one Frequenz, for me this would be 2600.

But I don’t find an antenna from a seller who ships to Germany.

Thanks!

Johnex · 2019-10-17T12:59:48.884Z

Yeah i recommend a narrow band antenna because it will be tuned better to that frequency you want. It will be more sensitive and won’t listen to a lot of surrounding noise. What happens with a wide band antenna is that is supports a wider band but at the same time less efficiently.

I couldn’t find a seller in Germany that has a 2600mhz only antenna but here is one close enough:

https://www.amazon.de/Leluckly1-Multifunktional-erfüllen-unterschiedliche-Bedürfni-Weiß/dp/B07YJWMNWF/

clubb1ng · 2019-10-18T06:08:45.018Z

Thank you very much!

I ordered this and will try it. At the moment i only got 2 mbps :/.

I will message here again, when I received the antennas.

clubb1ng · 2019-10-30T07:46:00.480Z

Hello,

today I recieved the antennas, but sorry, I don’t unterstand how to bring them on.

Do you have a instruction manual for me?

Big thanks