Siretta delta 40 amp 41 flat direct connect 2g3g4g antennae siretta delta40xsmamss32 sirettas delta 40 direct connect 4g antenna is tuned primarily to give good performance at 2600mhz in a small package however it also provides reasonable performance at 3g frequencies if your application requires only 4g 3g frequencies in a direct connect antenna the delta 40 could be a solution without the need to use the larger delta 41 siretta delta40xsmamss32 2g3g4g flat hinged di