Astatic 636L

     The 636L microphone is designed especially for use in situations where there is high background noise levels, such as in trucks but is equally suited for other applications with or without noise present. The commercial version of this mic is used in public service agencies, such as fire departments, all over the United States.  The 636L has a rugged ABS housing, polyurethane coated steel grille, and a dependable low impedance dynamic element.

• Rugged Housing Design
• Polyurethane Coated Steel Grille Screen
• Low Impedance Dynamic Element
• Coiled Cord on 636L is 31" coiled and 48" moderately stretched, Chrome models have a metal sheilded "phone booth" type cord 50" long.
• 4-Pin Connection
• Designed for Close Talking Handheld Applications
• For CB, Amateur Radio & SSB Communications
• Bulk (No Package)
  
   

This is a noise canceling microphone:
Don't forget the lip guard is there to remind you of the close spacing required. To best describe the spacing,I would say your upper lip touches the rubber guard and bottom lip should almost drag the screen when talking. Take this mic away even 1" or tilt sideways from your mouth and 70% of your audio is GONE !!!

See this video on how to properly
hold this NOISE canceling mic.