Are there any small TVs for ATSC 3.0?

I've been very happy with my ADTH NextGen TV box that connects to my TV using an HDMI cable. It receives OTA signals and gives you the choice of watching ATSC 1.0 or 3.0 broadcasts. The cost isn't bad either. Their customer support has been very good also.
 
I've been very happy with my ADTH NextGen TV box that connects to my TV using an HDMI cable. It receives OTA signals and gives you the choice of watching ATSC 1.0 or 3.0 broadcasts. The cost isn't bad either. Their customer support has been very good also.
Am I correct in understanding that a box is required for each TV? Also are there any DVR capabilities - I can''t find it listed on the website
 

Pearl TV / Silicon dust article