These are very unique high performance dual side earphone boom microphone headsets. The headsets are outfitted with the iC Electret mic element. Designed for commercial broadcast applications, the -3 dB points are fixed at 100 Hz and 12 kHz with a sensitivity of -57 dB at 600 ohms output impedance (centered at 1 kHz).
The microphone audio for the Pro Micro Dual Side Headsets terminates into a 1/8 in. mono male plug, while the headphone terminates into a 1/8 in. stereo with an adapter for 1/4 in. headphone jacks. All Heil Pro Micro Single Side Headsets include a foam windscreen that fits over the microphone. The windscreen does not change the frequency response, just the breath blasts directly into the microphone.
Requires a AD-1-iC Adapter Cables (Sold Separately) that will allow for a simple interface with ICOM transceiver inputs. The adapter is 6 in. long and has a 1/8 in. female input jack for the headset boom microphone and a 1/4 in. female for the PTT (push to talk) line for the Heil foot or hand switch. The headset stereo plug goes into the headphone jack on the transceiver front panel.
Specifications:
Headset Type: On ear, Dual
Microphone Element Type: iC Electret
Headphone Connector Type: Stereo 1/8 in. male plug
Microphone Connector Type: 1/8 in. male mono
Headphone Adapter Included: Yes
Push-To-Talk Switch: No
Radio Connector Cable Included: No