You need to assing the ground object as a target of your aircraft in mission dialogue box.
EDIT:Ops, sorry, i did a mistake...
so.... i've never did a SEAD Mission placing ground objects, it maybe works if you put the object that had you added(the radar) putting your flight as a objective.
but.... what i usually do is:
Search in the map for a SAM net and set it as mission objective and it will attack you.
Search in terrain_types/terrain_targets.ini to see the "target area" operational date
btw... IIRC the straingt flush is just an radar, it can't attack you....it just can give to your Anti-radar missile a good dish.
This should help(i hope)
As for the TV screen, you may have a look at Craig's typhoon ...it have a good tv screen mode....