Swimming Taught by Telephone

BY MEANS of a special headset and transmitter, a San Francisco coach is teaching swimming via telephone. The instructor stands on the edge of the pool and relays advice to his pupil in the water.

Specially prepared, waterproof transmitters and receivers, plus a length of telephone wire, comprise the set which operates on a charge of three volts. The advantage of the device is that faults are corrected while the swimmer is in action.

Efficient Antenna for Auto Radio

A MANUFACTURER of radio equipment has designed a novel antenna for auto radios. As shown below, the antenna is attached to the underside of the running board where it is out of the way.

Phone Holder Has Bell in Base

A NEW telephone holder, designed to eliminate unsightly bell boxes from walls and desks, contains both bell and wiring connections in its base.

It is constructed entirely of bakelite, is 5-3/4 inches wide and 7-3/4 inches deep. Due to its compact arrangement, it can accommodate all the standard equipment in this small space.

The holder is designed to work either with or without the dial arrangement.

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ETHER JUMPERS NEVER SLEEP

By Emile C. Schnurmacher

THE man who stops time in its tracks, or turns it forward to tomorrow or backward into yesterday by simply pressing a button, sits quietly in front of the long panel in the master control room of the National Broadcasting Company at Radio City, watching the hands of a clock which point to twenty seconds less than twelve o’clock noon.

In just twenty seconds the musical program being broadcast by a Philadelphia concert orchestra will leave the air. In twenty-one seconds, hundreds of thousands of listeners who are tuned in on the network will, through their sense of hearing, be transported half way round the world to Delhi, India, where a speaker is waiting to give a description of an amazing election, telling how 33,000,000 voters, most of them illiterates, went to the polls.

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New Radio Pen Reproduces Pictures Put on the Air

BROADCAST listeners may soon receive comic strips, bridge problems, and road maps over the air through a new device known as a radio pen, now under experimental development by John V. L. Hogan, New York radio inventor. The machine is a simplified adaptation, for home use, of commercial high-speed facsimile apparatus, and is housed in a metal cabinet no larger than a typewriter. An electrical pen traces ink pictures, broadcast from the transmitting studio, upon a moving paper strip four inches wide, requiring about two and a half minutes to complete a sketch.

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Radio Looks Like Couple of Books
A NEW radio receiver now on the market has the appearance of a pair of gorgeously bound books, as shown above. One lid opens up to give access to the tuning and volume knobs and the loud speaker.

The Perfect Secretary—a Machine
LEAVING his office for a few minutes, M. Keiser, inventor of the televoice, hooks up the gadget shown below with his telephone. Drama ensues. When phone rings, the machine lifts receiver, advises via phonograph record that “Mr. Keiser is not in, but requests that you leave your message, which will be automatically recorded.” Through a dictaphone arrangement, caller’s words are transcribed to wax cylinder, whence they are audibly reproduced for Mr. Keiser at his convenience, as often as he wants to hear them.

Professor Stays Home; Conducts Class With Two-Way Radio

UTILIZING “micro-waves,” Marconi’s latest discovery in the radio field, Dr. C. C. Clark can lecture to his General Science class a quarter of a mile away without leaving the quiet comfort of his own home.

A receiver in the class-room is tuned to the professor’s lecture, and questions are answered directly as they are relayed over the two-way transmission by the professor’s assistant. Such a device will permit instructor to carry on his lectures even while sick and confined to his home.

This reminds me of something from the movie Young Einstein.

Radio Modernizes the Old Hayrake

THE old hayrake has gone modern, and is now on par with the automobile., Take a look at the photo below and see what happened when a young fellow with a radio bee in his bonnet took it upon himself to modernize the rake.

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Radio Buyers Dictate New Designs

DETERMINED to eliminate all guesswork, radio manufacturers recently conducted an intensive survey to determine exactly which cabinet designs and mechanical features most appealed to prospective radio
buyers.

Trained investigators recorded thousands of preferences in cities large and small from coast to coast. Out of this mass of statistical data, radio engineers were able, for the first time, to tabulate the likes and dislikes of the American radio audience. The immediate result was a radical change in cabinet design, harmonizing with all styles and periods of furniture. In keeping with the outward refinements, engineers designed new tubes, perfected remote control devices, eliminated aerials, built new speakers and made short wave reception possible in every home.

HELMET RADIO

Here’s a receiver worn under the shield of a motorcycle policeman’s helmet. It was designed by Larry Smith, Atlantic City police technician.

Radio-Newspaper Receiver for Home Use

Designed to fit the top of a commercial table receiver which it matches in cabinet style, a complete radio-newspaper receiver for home use has just been placed on the market. All necessary apparatus for receiving and printing news bulletins and pictures transmitted over the air are contained in the unit. The news is automatically printed on a continuous sheet of paper that unwinds from a roll as it is received. The instrument can be used in conjunction with any radio receiver, the manufacturer declares, provided it has an output of at least five watts.