RCA Uni-Directional 77a Microphone
https://www.nfsa.gov.au/sites/default/files/09-2016/rca_uni_directional_microphone.jpg
Title:
RCA Uni-Directional 77a Microphone
NFSA ID
432129
Year
1932
Silver coloured metal bottom half, metal mesh on top half. Includes a metal holder with which to pivot the angle of the microphone which would attach to a microphone stand.
Approximate microphone dimensions: 100mm diameter x 290mm.
Manufactured in the USA, from 1932.
Photographer
Brooke Shannon