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Ellis Electrical Laboratory 30N
This is an Ellis Electrical Laboratory carbon microphone manufactured circa 1931.
Federal Telephone & Telegraph 261W
This is a Federal Telephone & Telegraph carbon microphone manufactured some time between 1920 and the late 1930s.
Jenkins & Adair C6
This is a Jenkins & Adair condenser microphone with an unknown polar response and unknown date of manufacture.
Kellogg Electric Double Button Carbon
This is a Kellogg Electric carbon microphone with an unknown manufacture date.
Kellogg Electric 501
This is a Kellogg Electric carbon microphone with an unknown manufacture date.
Kellogg Electric T32
This is a Kellogg Electric carbon microphone with an unknown manufacture date.
RCA 44A
This is an RCA ribbon/velocity microphone with a bi-directional polar response that was manufactured circa 1933.
RCA 44B
This is an RCA ribbon/velocity microphone with a bi-directional polar response that was manufactured circa 1938.
RCA 44BX
This is an RCA ribbon/velocity microphone with a bi-directional polar response that was manufactured circa 1949.
RCA Type 50A
This is an RCA ribbon/velocity microphone with an unknown polar response that was manufactured circa 1934.