Are you sure the booster was on?
Turn of the antenna switch/power supply,, Go topside, take a volt meter.
Disconnect cable from antenna,, CAREFULLY connect meter to coax,, I suggest using a short clip on jumper cable (mini jumper) for the center wire, you can just hold the black lead against the ferrel (Sleve) of the connector.
Have partner turn swich inside on,, Should see 12 volts.. no 12 volts means booster was not on and antenna was not connected
Most common issue is old cable roof to antenna or blown fuse indoors.
Kind of rare but I ahve seen it and I do not see all that many since I do not do this for a living is a bad connector, at the roof line.
Booster is inside the antenna head by the way.
Other thing I have seen... When I pulled the power supply/switch there were NO CABLES attached to it, Nothing, not even cables detached from it, they had been ripped out. And recall I do not do this for a living yet I've seen that.
Suggestion: Assuming cables are good, Replace the indoor modle (Wall plate) with Winegard Sensar PRO.. Very nice tool.