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Loud Speaker Telephone CW-929

Loud Speaker Telephone CW-929; Western Electric (ID = 2049052) Speaker-P Loud Speaker Telephone CW-929; Western Electric (ID = 2049055) Speaker-P
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Loud Speaker Telephone CW-929; Western Electric (ID = 2049052) Speaker-P
Western Electric: Loud Speaker Telephone CW-929 [Speaker-P] ID = 2049052 1400x1050
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For model Loud Speaker Telephone CW-929, Western Electric Company Inc.; New York (NY):
US-CW-929-vue de face-(réf: 1200).
Country:  United States of America (USA)
Manufacturer / Brand:  Western Electric Company Inc.; New York (NY)
Year: 1915 ?? Category: Loudspeaker, headphone or earphone
Wave bands - without
Power type and voltage No Power needed
Loudspeaker Horn / Ø 13 cm = 5.1 inch
Power out
from Model: Loud Speaker Telephone CW-929 - Western Electric Company Inc.;
Material Metal case
Dimensions (WHD) 130 x 320 x 170 mm / 5.1 x 12.6 x 6.7 inch

Haut-parleur-col de cygne, pour téléphone. This CW-929 Horn Speaker was part of the Western Electric CW-936 Radiotelephone set.

The Western Electric CW-936 Radiotelephone set was developed by Western Electric for the Department of Navy during WWI for use primarily on sub chaser (U-Boot-Jäger) ships. The complete CW-936 Radiotelephone set consisted of the following major components. The WE CW-928 power switch board, two CW-927 dynamotors, the CW-938 transmitter-receiver, the CW-926A audio amplifier, the CW-969 antenna switch, the CW-930 microphone CW-834 headset and the CW-929 Horn Speaker.
The transmitter and the audio amplifier operated directly off the 350 volt outputs of the CW-927 dynamotors. The entire system operated from the ship's 30 volt storage batteries.
This first completely successful voice modulated equipment was designed for use on any one of five frequencies. The frequency could be shifted to any one of these, all of which were within the band 500-1,500 kc., by means of a simple frequency change switch which cut in different fixed values of capacity and inductance for each of the five switch positions.
Net weight (2.2 lb = 1 kg) 3.3 kg / 7 lb 4.3 oz (7.269 lb)

Model page created by Museum Musée des Radios. See "Data change" for further contributors.

All listed radios etc. from Western Electric Company Inc.; New York (NY)
Here you find 149 models, 124 with images and 27 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.