Replacement noise canceling amplified electret microphone (model Gentex 5060-4) for the attachment to a wire boom. 

• High impact plastic housing.
• FAA approved FAA-TSO C58A.
• Weatherproof, shock and vibration resistant.
• Accepts standard U-173/U plug.
• Foam puff screen with o-ring included.
• For civilian VHF, business band, FM and CB radios.
• Output impedance less than 50 OHMS.

Other items you may need:
Microphones with Booms