move Home Internet SIM to personal router with external antenna

A follow-up. I confirmed that you cannot use a home internet SIM in a different router. T-Mobile will not allow it. It can be done with a business account. I went to a T-Mobile store and one other item I discovered is that if you have 2 lines you can add a third line for a Magenta Tablet plan. It is $20/mo for unlimited data after the discounts and autopay. I also compared the home internet speed with the speed of this new line and they are virtually identical. So if you add the magenta tablet plan you can put the SIM in your router and accomplish the same as the $30/mo home internet option. I'll play with this to confirm it does not throttle. They told me it is a true unlimited plan at the store so we will see.