1940 Barrage Balloons

Eighty-five years ago this month, the December 1940 issue of Practical Mechanics had this illustration of the barrage balloons that were a familiar sight over London. My mid-1940, about 1400 such balloons had been deployed there and in other British cities. Each was tethered to a truck. They carried a steel cable to make navigation at lower altitudes dangerous or impossible. Enemy bombers were forced to higher altitudes. This made them more vulnerable to anti-aircraft fire, since the relative motion, as seen from the ground, would be much slower than a plane zooming by at ground level.



1955 Arvin Radios

Seventy years ago this month, the December 1955 issue of Boys’ Life carried this ad encouraging boys to drop hints for an Arvin radio for Christmas.  The ad featured the model 952P four-tube portable, the 848T four-tube clock radio, and the “unbreakable”  and economical 840T, available in six sharp colors with, you guessed it, four tubes.



1955 Transistor DX

Seventy years ago this month, the December 1955 issue of QST carried this item from Charles Atwater, W2JN, detailing his experience with what we would call today QRPP operation.  He put together a transistorized 80 meter transmitter employing a 2N113 transistor.  His first contact spanned 266 miles with 30 milliwatts, and was copied over 400 miles away.

He later made a two-way QRP contact with W2PEO, who was running 20 milliwatts.

The distance to W2PEO isn’t given, but his first contact with W1QGU was a respectable 8866 miles per watt.  If W2JN sounds familiar, it’s because we featured him previously for his construction of a transmitter in 1928.



1945 General Transformer Corp. Battery Eliminator

Eighty years ago, if you had a battery powered portable radio, you could run it at home on household current for only $15, thanks to this battery eliminator from General Transformer Corp., 1250 W. Van Buren St., Chicago.  That address is now an apartment building overlooking the Eisenhower Expressway.

The ad appeared in the December 1945 issue of Radio Retailing.



Magnavox TRF-5, 1925

If you were looking for a radio in Milwaukee a hundred years ago, this Magnavox TRF-5  would have been a good choice.  As the name implies, it had five tubes.  Apparently, 3 of them were for RF, with the other two for audio amplification to drive the included speaker.

It is shown here in an ad for Gimbels, in the December 5, 1925 issue of the Milwaukee Leader.  The price tag of $89 works out to $1651 in 2025 dollars.



1945 Radio and Toaster Sales

Eighty years ago, this picture appeared on the cover of Radio Retailing, December 1945. I wasn’t quite sure what was going on, so I asked ChatGPT for the back story:

In the winter of 1946, the little shop on Westbury Avenue still smelled faintly of machine oil and warm dust—the scent of radios waking up after a long night. Mr. Harland, the shop’s proprietor, prided himself on being able to fix anything with a dial, but that morning he wasn’t repairing a set. He was demonstrating one.

“This one,” he said, patting the glossy black radio as though it were a fine horse, “has FM. Not many folks know it yet, but FM is the future. Clear as a bell—no static at all on a good day.”

Across from him sat a young woman in a tailored dark suit, gloves folded neatly in her lap. Her name was Margaret Hale. She had just returned from Washington, where she’d been decoding signals for the Navy. The war was over, but she hadn’t quite learned how to live quietly. She felt strange having nothing urgent to listen for.

Her aunt had suggested she buy a new radio. “Something cheerful,” the aunt had said, “to bring a bit of the world back into the house.” So Margaret found herself in Harland’s shop, watching the man beam with pride over the technology he’d been waiting years to see flourish.

He turned a dial, and warm music floated out—strings, a gentle swing rhythm, the kind of melody that wrapped itself around a person’s shoulders. Margaret smiled for the first time in weeks.

“It’s lovely,” she said.

“It is,” Harland agreed. “And next year—television. Mark my words. Pictures through the air. Folks’ll gather around these things like they once did around the piano.”

Margaret imagined it. Scenes unfolding in real time, stories arriving right into one’s home. She wondered what sort of world would rise now that the explosions had quieted. Maybe one with more voices, more connections, more ways to understand one another.

“I’ll take it,” she said.

Harland brightened even further. “Excellent choice. I’ll have it delivered this afternoon.”

As she stood to leave, she paused beside the radio. The music was still playing, light and hopeful. For the first time since the war ended, Margaret felt the faint stirrings of a life with room for ordinary joys—songs in the morning, news in the evening, perhaps even laughter filling the quiet corners of her home.

Outside, the cold wind of January 1946 swept past, but she felt warm. The world was humming again, and she was ready to listen.

I’m pretty sure that’s a toaster, and not an FM radio just to the left. But I can’t quite see what Mr. Harland is fiddling with, so it’s quite possible it’s an FM radio.  But one way or another, the world was humming again.



1940 Motorola Model 61-F Radio-Phono

If you were Christmas shopping for someone in a small apartment 85 years ago, then you really couldn’t go wrong with this radio-phono from Motorola.  The record player was automatic, it had “BIG” reception, and the cabinet was beautiful walnut veneer.  The model number is not stated, but it appears to be a Model 61F (or a slight cabinet variant).

If that small apartment already had a radio but not a record player, then for only $29.95 you could get a fully automatic wireless phonograph (sometimes called a phono oscillator) to listen to your records over the radio.

The ad appeared in Life magazine 85 years ago today, December 2, 1940, and also reminded readers that Motorola had radios designed to fit your car.



Lighted Dial for Your Portable Radio: 1940

Eighty-five years ago, the December 1940 issue of Popular Science carried this helpful (but self-explanatory) hint of how to illuminate the dial of your portable radio. Simply attach a penlight to the cover, pointing at the dial.



1955 One Transistor Regen

Shown here is a simple one-transistor regenerative receiver for the broadcast band, from the November 1955 issue of Popular Electronics. It had been sent in to the magazine by one Mr. R. Zarr of Brooklyn, NY, who pointed out the simple regeneration mechanism, consisting of two capacitors across the emitter and collector of the CK722 transistor.

The set was said to be selective, being able to separate the many stations booming in in the New York area.



1955 Status Symbol: An Antenna

A television, or even a radio in your car, was a status symbol 70 years ago, as evidenced by this item from the November 1955 issue of Popular Electronics:

The Snyder Manufacturing Co. has announced that not all homes with television antennas on the roof have a TV set in the living room. Likewise, not all automobiles with radio antennas have auto radios.

A year-long survey has been completed by Snyder’s distributors and field men. It was discovered that out of every 100 homes with TV antennas visible on top of the roof, 7.3 have no working TV set. Of 100 automobiles inspected by Snyder, approximately 12.1 do not have radio receivers.

Non -working TV antennas were attributed to home owners who put up cheap an- tennas to give the impression that they owned TV sets. Some families (about two out of every 100) owned TV sets that went bad and had not been repaired. One family out of every 500 explained that they were anticipating color TV and had not installed a black-and-white receiver to go with their antenna.

As for the 12.1 cars with “phony” car radio antennas, the Snyder survey indicated that virtually all such motorists were putting up a false front. To meet this demand ( ?), the Snyder Co. will soon market a “Tenna-Phony.”

Apparently, the good folks at Snyder were true to their word, and the Tenna-Phony did hit the market. You can see a New Old Stock example at this auction link.