I'm curious about the model you use. I tried another brand - ZOSI 1080P FHD - and it drops the signal and only works on occasion. I got a free replacement and same problem so I think it might be Viasat.
I use 6 foscam cameras. They only
upload snapshots to email and save all video locally on an SD Card. They
are very low cost cameras and have no monthly fee requirements. Have
used them with Viasat since 2014. Works great.