3 expensive antennas indoors??? Get them outside if you can. Having indoor antennas is a royal pain - many will pick up every possible noise source possible from within your building/house. Which antennas?
As mentioned in the HF forum, which is where I'm going to try to get this moved, at night 80/160 can be quite good (if you're into the ute stuff, you look in between 4 and 6, and around 8 and 9 mhz at night, higher during the day). The better the antenna the better the results. It's really understanding the receiver, antenna and how propagation (which is generally cruddy with the flux numbers this low) happens to be that day that gets the results; and that can take time to learn.
73 Mike