Category Archives: Uncategorized

Alabama Schools Integrated: 1963

1963Sep5PghSixty years ago today, schools were desegregated in Alabama, as reported here in the September 5, 1963, issue of the Pittsburgh Post-Gazette.  A hundred white persons were on hand to protest the two black children, Dwight and Floyd Armstrong, but according to the paper, the disorder was short lived.

Democratic Governor George Wallace didn’t intervene, but he did state that this was only the first battle.  About a week later, the 16th Street Baptist Church was bombed, killing four young girls.  Shortly thereafter, the church received over $300,000 (about $3 million in 2023 dollars) in unsolicited donations.



1938 One-Tube Shortwave Receiver

1938SepPM1This young woman is now about 90 years old, but in the September 1938 issue of Popular Mechanics, she is shown helping her father pull in a shortwave signal with the simple one-tube receiver described in that issue. It uses an RK-43 dual triode tube as regenerative detector and audio amplifier.

The set can be initially constructed for the standard broadcast band.  Then, to pull in the shortwaves, a fixed capacitor is switched in series with the main tuning capacitor to lower its capacitance.  In addition, shortwave coils are used in place of the coil for the broadcast band.

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1938SepPMSchematic



1963 Sony Micro-TV

1963AugElectronicsWorldSixty years ago, if you wanted a small television that you could watch anywhere, it was available, but it wasn’t cheap. Shown here, in the August 1963 issue of Electronics World, is Sony’s ad for its Micro-TV. Weighing in at only 8 pounds, the 25-transistor set could be powered with AC, DC, or an optional rechargeable battery pack.

The retail price was only $189.95. According to this inflation calculator, that works out to about $1897 in 2023 dollars. If you lived in an area with one of those elusive UHF channels, you weren’t out of luck, because an optional UHF adaptor (and yes, that’s an alternate spelling) was available for only $49.95 extra. The prices weren’t given, but other accessories (such as the rechargeable battery) were available, including a “luggage carrying case.”

I guess I would pay extra for the carrying case. If I was taking my $1897 TV with me on vacation, I’d want it to be well protected in transit.

These days, you probably don’t need the luggage carrying case. You already have a TV screen in your pocket, and you just need the tuner for it. The the one shown here plugs into your android phone and allows you to watch local TV stations. And it costs a lot less than $1897.00.

 



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1948 RCA Portables

Screenshot 2023-06-06 9.02.39 AMScreenshot 2023-06-06 9.03.21 AMSeventy-five years ago, the June 14, 1948, issue of Life magazine carried this ad from RCA, showing the company’s lineup of portables, and suggesting that your sainted dad might enjoy one of them for Fathers Day.

The lowest cost option was the model 54B at $29.95, which was battery only.  The four-tube set measured about 6 by 4 by 3 inches.    The model 8BX5 at $34.95 could run on AC or DC power or battery.  It featured five tubes, since it also included a rectifier.

The top of the line was the 8BX6, dubbed the Globe-Trotter, for $49.95, which also had three-way power.  This set had six tubes and a four-inch speaker.



1943 Toy Sidewalk Tank

1943MayPMtankWartime toy shortages didn’t mean a shortage of war toys 80 years ago. And even if our leaders get us into another war, Junior can still have the coolest (but most politically incorrect) toy on the block, courtesy of this homemade sidewalk tank from the May 1943 issue of Popular Mechanics.

Realistic machine gun sounds are courtesy of a hardwood ratchet hitting two bamboo splints. Four roller skates are pressed into service as the wheels. Even Fido gets in on the action as these two young soldiers go after the enemy.



Using the CB in Emergencies: 1973

Screenshot 2023-03-31 10.12.36 AMOur younger readers might find this hard to believe, but there was a time when you didn’t have a phone with you while driving. If you were in your car, you were cut off from the rest of the world. Nobody could call you, and you couldn’t call anyone else. As alien as the concept might seem, you might need to wait to talk to someone!

Believe it or not, being incommunicado in this way has its advantages. It gives you the opportunity to relax, without being bothered by someone else’s trifling concerns. Of course, on rare occasions, there are legitimate emergencies. If you car broke down, you would either have to hike to the closest payphone, or wait until a good Samaritan stops to help. Believe it or not, good Samaritans were more common then, because they realized you didn’t have a phone. Today, when people see a stranded motorist, they assume (usually, but not always, correctly) that the person has a phone. But back in the day, when you saw someone by the side of the road in trouble, you knew that unless someone stopped, they wouldn’t get any help. Armed with that information, it wasn’t uncommon to be the someone, and stop to help.

Of course, most good Samaritans are good, but there are also bad people who might take advantage of someone, especially a woman, helplessly stranded by the road. Therefore, having some mechanism to communicate, especially if you were a woman, wasn’t a bad idea. The billboard above highlights this fact, and it was seen on American highways fifty years ago, as shown here in the April 1973 issue of Popular Electronics.

Screenshot 2023-03-31 10.49.55 AMThe magazine highlighted the efforts of REACT and other CB clubs and organizations to provide someone to respond to such emergencies.  Since 1970, channel 9 had been designated as a channel for emergencies and motorist assistance.  In most areas of the country, REACT and other groups did an admirable job of monitoring channel 9, and the magazine provided a summary of those efforts, and pointers on using your CB in case of emergency.  It noted that in addition to routine monitoring of channel 9, many groups assisted with civil defense and emergency communications.  It encouraged CB’ers to monitor channel 9 whenever possible as a backup, but it did encourage waiting for organized groups to help before jumping in, since this encouraged people to join the organized groups.  One popular activity by such groups was providing coffee to motorists on holiday weekends, as shown here.

The billboard shown above was provided by the Electronic Industries Association as a public service.  The magazine provided details on how local CB clubs could contact outdoor advertisers to obtain the materials for the sign.



Happy April Fools Day!

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Happy April Fools Day from OneTubeRadio.com!

If you plan on playing any practical jokes, make sure they don’t backfire like this one from a hundred years ago. Ma made a sawdust pie to fool Pa. But it backfired when he reported that it was the best pie she had ever made.

The cartoon appeared in the Perth-Amboy (NJ) Evening News, April 2, 2023.



1973 Electronic Calculators

1973MarPSThe March 1973 issue of Popular Science reported that in the past year, a million Americans had become owners of electronic calculators, and the prices had fallen below a hundred dollars for the basic models. In 2023 dollars, that hundred dollars would be the same as $673, so it still wasn’t a trivial proposition. But they were quickly becoming an item that people could consider owning.

As I’ve recounted previously, a few months later, I recall uncharacteristic jealousy of the kid sitting in front of me in one of my classes whose parents coughed up $79 for his very own pocket calculator. It was just three years later when I was shocked to see the TI-30 scientific calculator in the store for only $29, and I quickly snatched it up, and it saw me through high school. By then, four function calculators were in the under-$10 category, and it was clear that they were around for the long haul. Teachers still said, “but you won’t always have a calculator with you,” but it was soon clear that even they were wrong.

The magazine included a buyer’s guide, and for the newbies, even showed the exact key strokes necessary to carry out everyday math such as balancing your checkbook (a largely forgotten art, it turns out).

Today, of course, the calculator is a practically free commodity item, as evidenced by some of the ones below, all available with free shipping:



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1953 Three Tube Shortwave Receiver

1953FebRadioElecSeventy years ago this month, the February 1953 issue of Radio-Electronics carried this circuit for a simple three-tube regenerative receiver for the shortwave bands. The magazine lamented that many younger hams and SWL’s grew up in an era of chrome-plated super-dooper receivers, and didn’t realize that for about $15, they could construct a receiver that would outperform communications receivers selling for nearly $100.

With plug-in coils, the set tuned 3.5 – 30 MHz, using three 1T5 tubes. The first served as RF amplifier, the second as regenerative detector, and the third as audio amplifier. The construction details were rather limited, but the magazine did warn that such a receiver was susceptible to hand capacitance, which could be minimized by a metal chassis and an RF choke added at a strategic location in the circuit.



Radio Caravan Promoting 1925 Portland Atlantic-Pacific Highways and Electrical Exposition

Screenshot 2023-01-11 2.05.01 PMShown here in Popular Mechanics a hundred years ago this month, January 1923, is an automobile caravan promoting the 1925 Atlantic-Pacific Highways and Electrical Exposition, to be held in Portland, Oregon. The caravan toured Eastern Oregon to promote interest in the exposition. It included Army radio operators who demonstrated the apparatus, and for many rural citizens, it was the first time that they had seen or heard a radio.

Perhaps some of them went on to acquire the set shown below, which was also featured in the same issue of the magazine. The portable set, intended for use by non-technical radio fans, The entire set, including batteries, measured only 7 by 9 by 11 inches. According to the magazine, the set was tested near Galveston, Texas, where it solidly pulled in concerts from Georgia, Tennessee, Kansas, and Missouri, despite what were described as troublesome radio conditions endemic to Texas. Even more distant stations were also received at times.

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