rob10's post in Communications menu button does not work while airborne was marked as the answer
If you're not using EASY comms you need to use the COMM1 or COMM2 switch (at least in the Hornet) rather than the COMMUNICATIONS MENU binding. COMM MENU works on ground, but not in air. IIRC this can be forced on in missions/campaigns, so if you normally use EASY whatever mission you're flying may not let you use easy.
rob10's post in Targeting Pod and MAV Field of View Issue was marked as the answer
Yes. If MAV is on a DDI even if that DDI isn't priority the FOV controlled is always the MAV. You need to use OSB's to change things on the TPOD.
And as a general comment: please try the search function 1st people. This particular question gets asked and answered at least once every couple of weeks or less.