Polydirectional Microphone 77-DX MI-4045-F
RCA (RCA Victor Co. Inc.); New York (NY)
- Country
- United States of America (USA)
- Manufacturer / Brand
- RCA (RCA Victor Co. Inc.); New York (NY)
- Year
- 1950 ??
- Category
- Microphone or Pick-up element
- Radiomuseum.org ID
- 131180
-
- alternative name: RCA Manufacturing || Victor Talking Machine
Original-techn. papers
- Wave bands
- - without
- Power type and voltage
- No Power needed
- Loudspeaker
- - For headphones or amp.
- Material
- Metal case
- from Radiomuseum.org
- Model: Polydirectional Microphone 77-DX [MI-4045-F] - RCA RCA Victor Co. Inc.; New
- Dimensions (WHD)
- 3.75 x 11.5 x 2.5 inch / 95 x 292 x 64 mm
- Notes
- RCA 77-DX MI-4045-F Polydirectional Microphone, ribbon type. Response: 30 - 20.000 Hz, three position voice - music response switch, impedance 30, 150 or 250 ohms, directional pattern selector, positions marked U, N and B, as symbols for the uni-directional, non-directional and bi-directional patterns. Three additional markings L-1, L-2 and L-3, finished in satin chrome and a low-gloss umber-gray enamel.
- Source of data
- -- Original-techn. papers.
- Author
- Model page created by a member from A. See "Data change" for further contributors.
- Other Models
-
Here you find 5132 models, 3235 with images and 4167 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from RCA (RCA Victor Co. Inc.); New York (NY)
Collections
The model Polydirectional Microphone is part of the collections of the following members.