General Information

Serial #

N/A

Part Number

13

Total Parts

14

AKA

N/A

Patents

N/A

General Description

Unknown

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

N/A

Width

N/A

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Aviation

Category

Aircraft instruments

Sub-Category

N/A

Manufacturer

AKA

SHURE

Country

United States of America

State/Province

Illinois

City

Evanston

Context

Country

Worldwide

State/Province

Unknown

Period

Used within the Dash 7-100, which was active between March 27th 1975 until October 26th 1988.

Canada

This microphone was used aboard a de Havilland Canada DHC-7 Dash 7-100, which is currently on the floor of the hangar at the Canadian Aviation and Space Museum.

Function

This microphone model is recommended for mobile communications where carbon microphones have been in use, i.e., military, police, marine, aircraft, taxicab, etc., where intelligibility and long life are important.

Technical

The 405T Microphone is a controlled magnetic type unit intended to replace carbon microphone in mobile communication equipment without circuit changes. This microphone was designed for clear, crisp, natural voice reproduction of high intelligibility. The response frequency characteristic is from 200 to 4000 Hertz. The unit is not affected by operating or storage termperatures up to 74°C (165°F). The microphone fits naturally and comfortably in the palm of the hand - retaining a natural feel when the weather varies from hot to cold. This model is equipped with a heavy duty push-to-talk switch, designed to withstand severe operating conditions and constant usage. (Ref. 1)

Area Notes

Unknown

Details

Markings

On the base of the microphone: " SHURE BROTHERS, INC. /. MODEL NO. 405T /. EVANSTON, ILL. U.S.A. /. SEE PATENT NOTICE INSIDE " On the main surface of the microphone: " SHURE " On the connector adapter: " M642/5-1 "

Missing

Appears complete.

Finish

Aircraft microphone with a dark grey synthetic exterior. The microphone has an attached synthetic neoprene-jacketed black spiral cord. The extremity of the cord has a bronze metal connector.

Decoration

N/A