hi,
When you have the LPO, the iff doesn't work, all the constants appear as "A", activating or deactivating the radar.
(I don't know about FC, I bought the module separately)
Most often I launch beyond the missile's range with the LPO, so when it is in the missile's range LA still appears, then you immediately switch to IR missile, and LA still appears.
If another contact appears in the battle, there is no way to know if it is friend or foe since all contacts appear as "A", except by deactivating the LPO, which is what I sometimes forget.
The only solution is to wait for full fidelity