Thanks everybody. Things r getting weird! In a good way!!
When I first tried airtv adapter on Hopper 3, The scan showed 0. then, I tried other 2 usb ports. Still 0. I took the preamp out of antenna coax. Tried. Nothing on all 3 ports. Had no idea what to do. Blamed the old antenna.
Bobby suggested that I unplug the Hopper and plug it back. (Hopper was showing OTA connection although airttv was not plugged. ) Well, I did that today. Again, coax from antenna (with power injector turned on) was connected to airttv adapter. And adapter to the bottom usb port behind the Hopper. Turned tv on then Hopper. Hopper said it detected ota and asked if I wanted to scan.!!!!!!!!! I did.
(Drum Roll pls!).
It started finding stations!!. Just like my experiment with small tv, it found 43 stations. I couldn't believe it. Still getting NBC WLWT 5 from Cincy, which is 70 miles North of me, and it looks great. Public tv and its subs very very good. CBC and its subs r still Crap.
I checked the software version. Still the same as it was last week. Here they r:
Hopper 3 U936 11/07/2020 3:03 AM
Appl. Soft. AN458
Joey 2 U766 11/07/2020 3:29 AM
I have absolutely no idea why or how Hopper managed to find those stations.
Still 2 questions:
1- The Guide shows all the OTA stations. But No information available. So, how do you record any show? No time blocks or program names to select.
2- Does adding distribution amplifier between airtv adapter and antenna (preamped) coax help to improve signal quality or is it just a dumb idea? (Mostly thinking the future if I cancel Dish)
Thanks y'all from a happy camper.