I've got a mecool k5 picks up ota dvb-t2 and dvb-s2 can record on to usb, but only the channel that's viewed suits me with android been using this type of box for about 6+years it's buggy but still works for me.
How about the VBOX Android TV Gateway.
Hauppauge makes a USB TV tuner that works with most Android devices.
Formuler cc and you Get mot2 thats same or better than tivimate and Nice remote
https://www.formuler.tv/cc
If local tv dont work with that tuner. Buy usb tuner and a formuler gtv