The talking machine world (July-Dec 1928)

The Newest in Radio Chas. Freshman Co., Inc., New York City. Model No. 17 all electric sixtube tuned radio frequency design receiver embodying the Freshman system of stabilization. Employs three Freshman Model 17 stages of tuned radio frequency, detector and three stages of improved audio amplification. Housed in a custombuilt cabinet of selected walnut with folding doors. Has built-in dynamic speaker. Illuminated single-dial operation with volume control and switch. Is 27% inches wide, 16 inches deep and 53 inches high. List price, $250, less tubes. Insuline Corp. of America, New York City. Kesistovolt-Antennavolt automatic voltage controller. Is aircooled and on an extreme overload of 10 volts per hour remains cool. Is all metal in design with polished nickel Kesistovolt-Antennavolt ends and lacquered body. This model, in addition to being a voltage controller, houses a tap for the aerial connection to the set which allows the use of the wall plug for aerial purposes without tying up the plug for providing current to the set. The light socket antenna is said to sharpen tuning and reduce static. Daven Corp., Newark, N. J. Television receiver contained in walnut finished cabinet which is 26 inches high, 26 inches wide and 13 inches Daven Television Receiver deep. Is equipped with a sliding visor and a combination disc, making it possible to be used for either 24, 36 or 48-line pictures by simply adjusting the visor and neon lamp. Another feature is the motor control, regulating the speed of the motor which revolves the combination scanning disc. By means of this control it is possible to keep the scanning disc synchronized with the scanning disc at the broadcasting, station with little effort. This television receiver is connected to the detector tube (the audio of the radio set not being used) of any standard broadcast or short-wave receiver. Newcombe-Hawley Reproducer United Reproducers Corp. (Newcombe-Hawley Division), St. Charles, 111. Table reproducer. Model 81-D, designed to hold the larger all-electric sets and will accommodate any set up to 30 inches in width. Is equipped with a standard Newcombe-Hawley dynamic cone unit which is concealed behind a gold screen in a walnut cabinet. Model 989 popular priced portable dynamic reproducer is attractive in design and constructed of walnut with Newcombe-Hawley Reproducer a gold screen covering the cone unit. Is furnished complete with NewcombeHawley dynamic cone unit, rectifier transformer, full-wave dry rectifier, input cord, AC connecting cord with switch and plug, fuse block and hum neutralize!-. A Model 9S7, using the same cabinet, is provided for DC operation at 100-200 volts, and a Model 980 is provided for 6-volt battery sets. F. & H. Radio Laboratories, Fareo, N. D. Reesonator designed to balance the aerial and to tune the first untuned radio frequency stage. The addition of the Reesonator, to tune the aerial and the first untuned antenna coupling tube in exact resonance with the F. & H. Reesonator coming signal, is said to increase the volume, power and selectivity to the equivalent of an addition of two extra tubes. It is especially adapted for use in conjunction with certain machines, the most prominent of which are the single-dial Atwater Kent, Radiola and Crosley instruments. Lists at $4.75. Valley B Power Unit Model 828 Valley Electric Co., St. Louis, Mo. The B Power Unit, Model 82S, designed for all radio receiving sets up to ten tubes. It is finished in Berkshire Green; employs the Raytheon rectifying tube. The essential elements are the oversize transformer, special designed chokes and high voltage condenser. Convenient terminals are provided for the negative, detector, intermediate, amplifier and power voltages. The Allen-Bradley high resistance control is in the detector circuit and may be adjusted to meet the requirements of every set. This unit has two C battery taps : A 9-volt tap for use with the 112-A power tube, and a 40-volt tap for the 171 power tube. All terminals, voltage taps and controls are mounted under the cover of the unit. It is designed to give 135 to ISO volts of continuous power. Retails at $35. Gulbransen Model 360 Gulbransen Co., Chicago, 111. Model No. 360, seven-tube AC receiver, single-dial control, pilot light. Cabinet of American butt walnut with matched satinwood side panels. Sliding doors. Carpathian elm overlays on front and sides of top. Inside of doors is overall grille of fancy design for speaker. Gulbransen Model 270 Height H\i inches, width 26 inches, depth 15% inches. List price with magnetic speaker $192.50, with dynamic speaker $222.50. Both prices less tubes. Model No. 270, AC eight-tube receiver. Single-dial control, pilot light. Cabinet of American butt walnut with Carpathian and Zebra wood overlays. Sliding doors. Inside of doors is overall grille of simple design for speaker. Height 4S%, width 25M>, depth 17 inches. List price with magnetic speaker $245, with dynamic speaker $2S0. Both prices quoted less tubes. Buckingham Radio Corp., Chicago. Model A, pick-up only, manufacturers' type. Furnished with tapped mounting holes in frame and 2 or 3-foot cord. Cord is terminated with standard phone tips. List price, $10. Model A-l, pick-up only, same as Model Pick-up Model A, except special mounting bracket is fastened to the back of pick-up, fits all standard mechanical phonograph tone arms. List price, $10.45. Model C, electromagnetic phonograph pick-up. Tone arms made of Model 0 Pick-up die-cast brass carefully designed to give correct support to pick-up unit Bearings carefully machined and smooth operating. Weight of tone arm calculated to insure correct amount of inertia for best reproduction. Pick-up mounted so as to counter-balance part of weight , in order to reduce wear on record. List price, $14. Model C227, same as Model C. with volume control unit and Model 227 Model C 227 Pick-up adapter. For use with AC radio receivers. Pick-up finished in statuary bronze. List price, $19. Model C201, same as Model C227 but is for DC sets. Uses 201 adapter.' List price, $19. Model B201 consists of Model A (pick-up alone, without tone arm) with volume control unit and 201 adapter (for DC radio receivers). List price, $15.45. Model B227 consists of Model A (pick-up alone, without tone arm) Model B 227 Pick-up with special volume control unit and 227 adapter (for AC radio receivers). List price, $15.55. Rotary Converter Janette Mfg. Co., Chicago. Rotary converter, type CF-34-F, designed for the operation of from four to six AC radio receivers simultaneously. Converter transforms DC current to AC current and is used in DC districts of many large cities. Converter is of unusually rugged construction, being made with massive iron frame, large commutator, adjustable brush holders and Timken roller bearings. Develops one KVA AC output. List price, $206. DeForest Radio Co.. Jersey City, N. J. Five new DeForest audions: DeForest 401-A, general utility tube for radio-frequency, audio-frequency and detector functions. Provided with new oxide-coated filament, said to be capable of enormous emission as usual 5-volt rating and ample emission on filament voltages as low as 3.5. Mica spacer to insure positive character 106