In the NJG screen you'll see your radar equipment. I'm not sure, but probably you'll be equiped with the FuG 202 radar that have a range of only 2 miles, 8% effectiveness that is reduced by window devices... So your planes need to follow the beeps they receive in their radars for a long time until they really adquired a target.
Later in the game your planes will be equiped with better radars, like the FuG 212 (Range 2,5, Eff:9), the FuG 220 SN-2 (R:4, Eff:40) and FuG 240 Berlin (R:5, Eff:50, available at 1945).
Of course, allied planes electronic warfare systems will be also improved.
Thake a look to your NJG from time to time to see how they improve their equipment, and produce the new models...
Again I'm not sure... As I told you, I'm only a noob.
< Message edited by npsergio -- 2/22/2012 7:33:33 AM >