Siretta tango 40 amp 41 series 4g3gwifi small footprint bolt through antennae siretta tango40xntypefss32 the siretta tango 40 is a wide band outdoor antenna aimed at the 4g wi fi frequency but is equally capable of 3g and 2g frequencieswith a diameter of only 398mm the tango 40 can be fitted in small spaces or on cabinets with curved or non flat surfaces the tango 40 has a built in n type connector so it is easy to mount the antenna and then connect an rf cable to it the tan