Force Change of LTE Transmitter: Signaflex Dual-Panel 4G Antenna & Huawei E5573s-320 Modem/Router

Hello.
I have a signaflex antenna / dual-panel-dual-antenna-2x22dbi-4g-lte
and Huawei E5573s-320 modem / router.
I am currently outside of Poland and I have a problem catching a good signal. Ie. connects to LTE, has 5 range bars, but transfer at 1MB / s download and paradoxically 12MB / s upload. Ping 18-20ms.
My question:
Is it possible to manually force the modem / router to connect to a different antenna than the closest one?
Moving around 500m, he catches a different signal on the phone and flashes there not bad.
Do we know any program to find bts outside of btsearch.pl? To find something outside of Poland?

You don't have any antenna but a silencer, this shit sold by a cheap Chinese trader does not deserve this name. You haven't written what country it is, what operator and what frequency LTE uses. The parameters in the lines say nothing, the LTE signal has specific parameters. tests on a phone with LTE and Network Cell info application will show them, plus BTS data. With E5573 you have to use the programs http://www.lte-anbieter.info/ltewatch/count_huawei.php?Datei=ltewatch_h and https://www.dropbox.com/s/x3f5jxw89rjk0i9/E5186%20Toolbox_latest.zip?dl= 0 after logging in to them on e5573 they will show the LTE and CID BTS signal parameters, in addition they allow you to force specific LTE bands. In Europe, operators mainly use LTE1800, LTE2600 and LTE800. it is worth doing tests forcing these bands in turn with the router out without this signa from Signaflex. The speed test indicates that the BTS is massively overloaded, DL several times smaller than UL indicates this. It may be less loaded nearby but it needs to be located and tested for speed / load. If it is found and is in a different direction than the overloaded one, having a directional antenna for the selected band, you can force a connection with it. Of course, not with this plastic g. From Signaflex. You have a phone, E5573. To them I gave diagnostic programs, try to locate the better BTS yourself. At least enter the country, city, street and operator, maybe something will be found on the internet.

Thanks for the quick reply. I used your advice and I was able to change f to 800Mhz. Now I have a transfer rate of 14Mb / s dowload and 15 Mb / s upload with an antenna, which more serves as a better placement of the receiver, due to nearby buildings. And at 8 Mb / s and 3 Mb / s without antenna.