Acoustic calibrator 1411C
Dawe Instruments Ltd.; Brentford, Middlesex
- Country
- Great Britain (UK)
- Manufacturer / Brand
- Dawe Instruments Ltd.; Brentford, Middlesex
- Year
- 1981
- Category
- Service- or Lab Equipment
- Radiomuseum.org ID
- 344967
- Main principle
- Audio-Amplification
- Wave bands
- Wave Bands given in the notes.
- Power type and voltage
- Dry Batteries / 9 Volt
- Loudspeaker
- -Loudspeaker incorporated, but system not known.
- Material
- Various materials
- from Radiomuseum.org
- Model: Acoustic calibrator 1411C - Dawe Instruments Ltd.;
- Shape
- Miscellaneous shapes - described under notes.
- Dimensions (WHD)
- 45 x 45 x 118 inch / 1143 x 1143 x 2997 mm
- Notes
-
Dawe instruments have introduced a simple means of calibrating sound level meters with 25mm microphones in the form of a cartridge, the 1411C, which provides an output of 90 dB ±1dB at 1 kHz ±5% and is powered by a 9 V battery.
Couplers are also available for microphones of 12 and 20mm diameter.
The overall dimensions of the calibrator are 118 x 45mm diameter
- Mentioned in
- Wireless World (The), London (WW, 79) (Jun 1981, Page 83)
- Author
- Model page created by Gary Cowans. See "Data change" for further contributors.
- Other Models
-
Here you find 22 models, 18 with images and 5 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Dawe Instruments Ltd.; Brentford, Middlesex