Omnidirectional Antenna

Here is the LINK how to add MIMO Antenna as External Antenna https://www.waveform.com/a/b/guides/hotspots/t-mobile-5g-gateway How to Modify Modem to add MIMO Antenna at youtube https://www.youtube.com/watch?v=wXSpbP8NuWw&t=779s I put it indoor, works well. See pictures. It is easy to work it out. I can help if needed

I start with TWO MIMO, it works Great, I try using One, Not much difference. 

So I have an Extra MIMO antenna for sale at : $50

https://nextdoor.com/for_sale_and_free/3aea687c-fb1a-4629-a08b-ef589e58da05/