As in the topic I need a good external antenna for this router. I live in Mystków / I prefer to connect with the LTE800 transmitter I see from the window but the speeds are poor now: 8down and 17 up at night better. When the rooftop exhibition catches mine 1800 from the shadowy one, I will add that there are no antennae tightened, and something out there on 2,100 and 2,600 with a new filter, as shown in the screenshots.
Which antenna would be the best in this case.
Which antenna would be the best in this case.




