Category Archives: Radio history

1964 Six-Transistor British Portable

Sixty years ago this month, the cover of the British magazine Radio Constructor, November 1964, showed a photograph of this handsome, but ambitious, six-transistor portable, that could be run off either 7.5 or 9 volts. An artist’s conception is shown at the left.

The set pulled in both longwave and medium wave broadcasts (200 to 500 meters and 1250 to 1750 meters). Any suitable cabinet could be used. This one was made of wood, “and covered with one of the various materials which can be purchased for such purposes.”

1944 WLS School Time

We’ve previously written about the School Time program on WLS Chicago, which started in 1937. Every day at 1:00 PM, the station carried a program especially for school children, which was played in many schools in the region.

Eighty years ago, the station boasts in this ad on the cover of Broadcasting magazine, November 20, 1944, about how successful it was. The station reports that a single announcement offering a color map of the Brookfield Zoo. 5,629 letters flooded the station asking for a copy of the map. While the ad noted that the School Time program wasn’t for sale, they had plenty of programs that were, and an ad on the station promised to deliver results.

1944 British One Tube SW Receiver

Eighty years ago this month, the November 1944 issue of Practical Wireless showed how to put together this handsome one-tube receiver for the short waves. While the magazine pointed out that some treated the single-tube design with disdain, but it would pull in an amazing number of DX stations. It was said that it was capable of first-class results with headphones.

1944 Admiral Ad

Eighty years ago, the U.S. was still at war, but there would soon come a time when Johnny came marching home. And when he did, he would want a radio, a phonograph, and home appliances, things that were currently unavailable.

Admiral had already started advertising, and in this ad in the November 1944 issue of Radio Retailing, it reminded dealers about those ads, and encouraged them to get ready to start selling Admiral products.

1944 One Tube Radio and Phono Oscillators with Hartley Oscillators

One tube radios don’t get much simpler than the one shown here, which appeared in the November 1944 issue of Radio Craft magazine, having been sent in by one Reggie Baker of Miami, Arizona. The circuit was described as a split Hartley with a type 30 tube. It could operate with two dry cell batteries.

Another Hartley oscillator was used in the circuit shown below, a phono oscillator. This circuit used a 6A8 or 12A8 pentagrid converter tube. It had been sent in to the magazine by Ralph Day of Moncton, N.B., who pointed out that it could also be used as a signal generator, using either phonograph music or an audio oscillator. It would appear that this is the same person as the Ralph Granville Day named in this 1959 marriage certificate, as the groom’s occupation is described as “T.V. and Radio.” He was born in 1924, which would have made him 20 years old at the time of the magazine submission. He died in California in 2003, and his obituary notes that he served during the war in the Canadian Merchant Navy, and after the war spent several years at sea as a radio operator.

1939 Portable Sound System

Eighty-five years ago, the gentleman shown here spinning the records put his entrepreneurial skills as well as his tech savvy to work with this portable sound system he designed. He is one Fred Dingman, who authored two construction articles about how to build the sound system in the November and December 1939 issues of Popular Mechanics.

He reported that the investment was only about $25, as all parts are inexpensive, and he built the enclosures himself. The finished circuit put out 10 watts of undistorted sound to two 12-inch speakers, meaning that he could provide adequate volume for small halls or outdoors. It was designed as an inexpensive substitute for small dance orchestras, and he had no difficulty obtaining engagements for fraternity and sorority parties, dancing clubs, or lawn gatherings in a middle west university town.

At a reasonable rate, he provided the equipment, operator, and records. For those wishing to follow in his footsteps, the magazine could provide a complete set of blueprints. The system could also accommodate a microphone.

Happy Halloween!

Happy Halloween from OneTubeRadio.com!

The illustration of these thoroughly modern witches appeared in Radio Craft, October 1944.

1954 Bike Radio

Seventy years ago, this young woman was the proud owner of a bicycle radio. As she rode, she could listen to music, or perhaps a ball game.

The receiver was constructed according to plans in the very first issue of Popular Electronics, October 1954, and was a four-tube superheterodyne design. The project was somewhat involved, but the magazine promised that it was simple. Alignment was required, but according to the magazine, if you couldn’t locate a signal generator, a local radio technician or friendly radio amateur could do the job for you.

Of course, the magazine reminded that bike safety was important, and it cautioned readers not to get so engrossed in a radio program that they failed to watch traffic. The cabinet could be painted to match the bike, or personalized with some snappy decals.

Since the set was so easy to build, clubs could make them in an assembly line fashion so that members would have matching portables during jaunts together. In fact, once this girl started the fad, the magazine was willing to bet that other groups would be following in short order.

1964: A Ham in the White House?

Sixty years ago, there was a prospect of a ham in the White House, namely, Barry Goldwater, K7UGA/K3UIG. The October 1964 issue of 73 Magazine showed the logical conclusion, namely, an antenna on the White House. And the following cartoons, by Wayne Pierce, K3SUK, appeared in that issue.

1939 Motorola Model 41-S “Sporter”

Eighty-five years ago this month, the October 1939 issue of Radio Craft featured the Motorola Model 41-S “Sporter,” weighing in at only 6-1/2 pounds. The antenna was an integral part of the shoulder strap, and the four-tube set was much to be desired. Publisher Hugo Gernsback had recently predicted that “when we go down to about 5 or 6 lbs.–a not impossible figure–we will have a receiver of much greater popularity,” and that time had come.

The article concluded with the further prediction: “Radio-Craft predicts that, now that radio sets are within sight of being really PORTABLE–so that milady can carry them a block without gasping for breath–the battery portable is destined to “go places” not
only in design, but also commercially!”