The Restricted Duty Ribbon is a decoration of the United States Coast Guard which was first created on March 3, 1984. The award recognizes those Coast Guard personnel who have completed an unaccompanied duty tour in which dependents were not eligible.
Standard unaccompanied duty tours are normally one to two years in length and occur in remote duty locations such as Greenland and the Arctic. In such cases, where a service member is assigned without his or her family, the duty status is known as "unaccompanied." The Restricted Duty Ribbon is awarded at the conclusion of the unaccompanied tour.
The Coast Guard is the only branch of the United States military to award a decoration for the completion of unaccompanied duty tours. Additional awards of the Restrcited Duty Ribbon are denoted by bronze and silver service stars.
Ribbon Mic Renaissance is a roundup of ribbon microphones.
The ribbon microphone, also known as the velocity microphone, was first developed by General Electric (and later by RCA engineers) during the late 1920s, yet its basic design principles endure to the present day.
Because of the mechanical characteristics of the suspended ribbon, sounds that originate at the front or back of the microphone are reproduced evenly over the entire audible frequency range, while sounds that arrive at the sides of the mic — which produce no pressure on the ribbon — are rejected.
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