said by kidaraine:
Is there any kind of barrier we can put up to block the amount of interference getting to our modem?
A directional antenna (or a DIY "corner reflector" -> you can look up on google or older posts in forum for how to make/use a corner reflector -- I think I had photos of my old setup somewhere in here. You can make a corner reflector with aluminum foil, a cardboard box, and no modifications to the actual modem) could help. A directional antenna would provide gain in primarily one direction and attenuation in most other directions. The exception to this being any help at all is if you're pointing the modem at a tower and the problem microwave is directly in between.