Pressure gradient receiver with short interference tube
Employs RF-technology to control residual microphone noise. Optimizing the transducer's acoustic impedance results in a further improvement in low noise performance
The RF-design yields low noise levels and high immunity to humidity and moisture
The comparatively low RF-voltage across the elements of the transducer also eliminates arcing and DC-bias creeping currents
Hypercardioid at low and medium frequency, above 2 kHz approaches lobar pattern