Radio Broadcast (Nov 1926-Apr 1927)

Record Details:

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NEW APPARATU uipment of the Radio Broadcast Radio Broadcast Photographs No. Name of Apparatus Cabinet Loud Speaker Cone Loud Speaker Drum Loud Speaker Binocular Tuning Coil Cardwell Brackets Sub-Panel Audio Choke Coil, No. 3 Na-ald Adapters Rubber Socket Dialite Manufacturer Artcraft, Inc. Selector Company, Seattle, Washington. Teletone Co. of America, 449 W. 42nd St., New York City. Benjamin Electric Company, 12028 S. Sagamon Street, Chicago, Illinois; also 247 W. 17th Street, New York City. Cardwell Company, 81 Prospect St. Brooklyn, New York. Samson Electric Company, Canton, Massachusetts. Alden Mfg. Co., 52 Willow St. Springfield, Massachusetts. Moulded Products Inc., 549 W. 52nd St., New York City. Carter Radio Co., 300 S. Racine Ave., Chicago, Illinois. Use of Product Sound reproducer for use with receiving sets. Sound reproducer for use with receiving sets. Sound reproducer for use with receiving sets. A tuning inductance unit for use in receiving sets. Supports for'sub-panel An audio frequency choke Tube Adapters Receptacle for vacuum tube. Illuminate dials of receiving sets. Price $30.00 $32.50 $2.50 $0.75 a pair $3.00 $0.75 to $1.25 $0.60 $1.75 Remarks The sound producing device in this loud speaker is a Miller unit having a long winding air column. This horn is suitably housed in an artistic cabinet. A cone loud speaking device of the completely freeedge type. Artistically decorated. Completely constructed of a special wood which aids in amplirying the loud speaking properties of the reproducing unit. Because of the arrangement of the two halves of the coil in a binocular shape, the field set up by these coils in a receiving ciicuit is self-confined, thus aiding in preventing oscillations due to inter-coupling effects. NicKel-plated stamped brass frames which are fastened to the rear of main panel to support shelves or sub-panels. The Samson No. 3 choke coil serves the useful purpose of deliberately preventing the audio frequency current in an audio amplifier from passing through B batteries, where inter-coupling effects may be produced. Instead, these audio currents must necessarily return to ground through the by-pass condensers provided for that purpose. For adapting old tubes to new sockets, etc Entirely shock-proof because of the resilient properties of the socket, composed of soft rubber. The Dialite may be added to any receiver, where it is desired to illuminate the dial markings. The Hashlight bulb with which it is furnished operates direct from a 6-volt source.