1974 8-Transistor Portable

Screenshot 2024-04-16 11.34.04 AMFifty years ago, the advanced British electronics hobbyist might have put together this portable 8-transistor receiver shown on the cover of the April 1974 issue of Practical Wireless.

The set was very versatile, tuning five bands:  160-350 and 580-1500 kHz for longwave and mediumwave broadcasts, 1.75-4 MHz for marine communications, as well as the 160 and 80 meter ham bands, and 5.9-11 and 13-27 MHz for shortwave broadcasts.

The finished superheterodyne set measured 5 x 7 x 1 inches, and was said to have wide general utility.  The set was constructed on three circuit boards.



Tabletop Baseball Game, 1944

Screenshot 2024-04-15 10.25.09 AMScreenshot 2024-04-15 10.34.56 AMEighty years ago, there was a war going on. That meant that you didn’t have gas to drive around, so your entertainment could mean nights at home. Since you might not have been able to go out and buy items to keep you amused, you might need to make them yourself.

This couple, for example, is playing a game of baseball, thanks to a tabletop baseball game, the blueprints for which appeared in the April 1944 issue of Popular Science. According to the magazine, the game was scientifically designed and offered all the thrills of a real major-league game.



Billings Polytechnic Institute, 1924

1924Apr24WolfPointHeraldA hundred years ago, a young man in Montana (it apparently never occurred to them that girls might be interested) who had completed the eighth grade, who would be interested in radio, could enroll in this course at the Billings Polytechnic Institute.

The course could stand alone, or be combined with a high school or college course.  The student would construct their own radio, and the course was to be unlike anything offered in the West.

The Billings Polytechnic Institute merged with another school and is now Rocky Mountain College.  This ad appeared a hundred years ago today in the Wolf Point (MT) Herald, April 24, 1924.



Sign of Spring

1939AprRadioRetailingIt’s a sure sign of spring when the birds start looking for parts from antennas that came down over the winter. This image is from the cover of Radio Retailing 85 years ago this month, April 1939.



1926 Grocery Prices

1926Apr22PigglyWigglyFor a snapshot of how much groceries cost in 1926, this ad for Piggly Wiggly appeared in the Washington Times on April 22, 1926.

The prices look low, but there’s been a lot of inflation since then. According to this online inflation calculator, one dollar in 1926 was the equivalent of $17.65 in 2024. So ten pounds of potatoes for 69 cents sounds like a bargain, but that works out to over $12 in today’s money. And the chuck roast for a quarter a pound sounds cheap, but it works out to $4.41 per pound.

What would you make for dinner if you were shopping in 1926?



A. Tomalino, Glendive, MT, 1944

1944AprNatlRadioNewsShown here, eighty years ago, is the well-appointed service bench of radio serviceman A. Tomalino of Glendive Montana. He was featured on the cover of the April 1944 issue of National Radio News, which noted that he unquestionably had one of the finest radio businesses in the west.

A 1956 issue of the same magazine shows the shop’s address as 303-1/2 N. Merrill, Glendive. According to his wife’s 2007 obituary, Tomalino died in 1993, almost a half century after this photo was taken.



1954 UHF Antenna and Converter

1954AprRadioNewsWe can’t think of anything that could possibly go wrong in this picture, which appeared on the cover of Radio News 70 years ago this month, April 1954.

It shows one Walter Schott assembling a Walsco Model 4450 UHF Corner Reflector in sunny California. On top of the set is the UHF converter made by the same company.



Radio at School, 1924

1924AprRadioNews1A hundred years ago, these students at Junior High School 61, Bronx, NY, were on the cutting edge of technology as they tuned into a program. The five-tube set was bought, installed, and operated by the students. The photo appeared in the April 1924 issue of Radio News.



Science Fair Idea: Refraction Set to Music

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Students with artistic sensitivities might feel intimidated by the science fair, but they needn’t be. By recreating all or part of this 1944 demonstration, such a student can wow the audience with a ballet performance, demonstrate the principles of refraction of light, and take home the blue ribbon, undoubtedly to the consternation of the science nerds who thought they had no competition.

The original 1944 version was put on by Bausch & Lomb Optical Co. for its employees, to demonstrate the scientific principles used in the bomb sight components the company was making. They put together a ballet-like performance set to music, while the dancers pulled white ribbons through the lenses, demonstrating the path of light.

Of course, this display takes a great deal of preparation. For students who are desperately searching for a project the night before the science fair, try our earlier project demonstrating the same principles, one that can be whipped together the night before.

A complete description, along with more pictures, can be found in the April 17, 1944 issue of Life magazine.



1939 Lightning Arrestor

1939AprilPM11939AprilPM2Eighty-five years ago, both daughter and Fido were helping Dad install a lightning arrestor for the family radio antenna. Dad noticed that the spark plug from a Model T Ford could screw directly into a 3/4 inch water pipe fitting. So he added a tee to an outdoor tap, screwed the spark plug into the other end, and attached the antenna.

The magazine noted that the same thing could be done with a section of pipe driven into the ground.

This item appeared in the April 1939 issue of Popular Mechanics.