Yea we have ATSC1.0 tuner card you can check our TBS6704 ,TBS6205se,TBS6209se ,How many frequency you need receive ?
you can use this to choose the right card for you :
https://www.tbsiptv.com/filter
Have sent TBS Technologies an email with the question, which card is competible with ATSC 1.0. There are 3 of them. If it doesn't work, I can always use DVB-S2 or DVB-T2 for the rest of the world.
Is there or does the US have a signal so I can align an antenna. Otherwise I'll be spinning at random and I'll never get any reception. If necessary in the radio field, if you know what I mean.