Category Archives: Radio history

A Look at 1939 Prices

EconomyBoys1939Here’s a sampling of what your money would buy 75 years ago today, on October 12, 1939. This ad for a store named “Economy Boys” appeared in the Milwaukee Journal.

Two radios for the home were shown. The least expensive was a four-tube Tiny Teletone for $5.44. An Admiral five-tube superhet “with television connection” was available for $10.95. Both of these radios had bakelite cases. For the car, a Troubado auto radio was available for $17.45. It had six pushbutton presets, and could also be manually tuned. A better image of this car radio can be found at RadioMuseum.org.

Radios were but a small part of what Economy Boys had for sale. Tires for your car started at $4.33, batteries started at $2.49, and spark plugs were 22 cents. Two gallons of motor oil were 88 cents. A bicycle cost $17.44. GE light bulbs were a dime. If you were willing to settle for “Elram” bulbs, they could be had for 7-1/2 cents each.

Economy Boys also seemed to have everything for the hunter. Rifles started at $4.69, and shotguns started at $6.66. Shotgun shells were 67 cents for a box of 25, and .22 cartridges were 16-2/3 cents for a box of 50.



One Tube, a Hot Chassis, and a “Curtain Burner”

Oct39PM

I guess if you really had your heart set on building a one-tube radio 75 years ago, this one might provide some amusement. It’s from Popular Mecahnics, October 1939.  It is, indeed, a radio, and it has one tube.

As you can see from the circuit, it’s basically a crystal set with an audio amplifier. The audio amplifier uses a 25A7GT, which is a pentode and rectifier in the same glass. To run the 25 volt filament from 110 volts, it relies on a line-cord resistor. The cord to the set does double duty: In addition to supplying 110 volts for the B+, it has a second conductor made of resistance wire to power the filament, and just maybe set fire to the curtains if it gets too close. In fact, this type of line cord was popularly known as the curtain burner.  And as you can see, the chassis is “hot.” If the switch is turned on, there’s a 50/50 chance that you would get zapped by 110 volts if you touched the chassis while also touching anything that was grounded.  (According to the pictorial diagram, the antenna ground is not hooked to the chassis, so it wouldn’t provide any safety).

Like any crystal set, the radio requires an external antenna and ground. It has no main tuning condenser. Instead, “the set is designed primarily to receive the ‘best’ broadcast station in any given area,” and you just tuned it once with a small trimmer condenser.

There’s no volume control, but if that station comes in too loud, you can just detune it a little bit.

If you want to build a replica of a vintage one-tube radio, there are probably a lot better choices. But for a beginner 75 years ago who wanted to work his way up from a crystal set, this one was certainly an option. I just hope that his parents warned him to keep the thing away from the curtains and not plug it in near the bathtub.



Popular Electronics First Issue, October 1954

First issue of Popular Electronics

First issue of Popular Electronics

Sixty years ago this month, the very first issue of Popular Electronics magazine, October 1954, rolled off the presses of the Ziff-Davis Publishcing Company.  The complete issue is available online along with millions of other pages of old radio and electronics publications at
americanradiohistory.com.

Transistors were already on the horizon, since the issue contains an ad from Raytheon for the CK-722 transistor, along with the offer, “Raytheon will supply you with complete information free. Just write to Department P.”

There’s a guest editorial from ARRL president Goodwin Dosland, W0TSN, extolling the virtues of Amateur Radio, the international hobby. Robert Hertzberg, W2DJJ, gives some pointers on getting the ticket in Part 1 of “So You Want to be a Ham.”


Construction projects include a four-tube bicycle radio (powered by a 90 volt B battery and 1.5 volt filament battery), a fire alarm (with low melting point alloy sensors), a light meter, and a code practice oscillator.

For those who want to dabble in servicing radios, there are two articles on how to align or repair an AM radio, although one cautions that beginners should steer clear of FM and TV receivers with their more complex circuitry.

The first “Carl & Jerry” story by John Frye also appears in the issue.


World War 2 Short Wave Listening

1939SWDial

Seventy-five years ago, Europe was once again at war, but America was for the time being neutral. But the shortwave bands were alive with the sounds of war, and Radio Guide, the predecessor to TV Guide magazine, was covering shortwave radio. The issue of the week ending October 6, 1939, gave some pointers for tuning in, as well as reviews of what could be heard from the European capitals. One article notes that “many listeners have given up tuning short waves in disgust after one or two feeble attempts, mainly because they did not know exactly where and when to tune for foreign programs intended for their consumption.” The article assures that by following the given instructions carefully, many stations could be heard.

Another article reviews the programs, and notes that the BBC attempted to appeal directly to the German people, and continued in its musical program to include German composers. It notes that French broadcasts were typically quite terse.

And as for the Germans, the article notes that while the output is typically crude, “the German stations have come up with the up-to-now cleversest device of combining propaganda with entertainment.” The station would play German waltzes and “only after the listener has settled down to a stretch of pure entertainment that the announcer quietly intersperses” propaganda.

For more information on the shortwave bands during the War, please visit my earlier post.


WCCO at 90 Years Old

WCCOxmtr1930

WCCO transmitter site near Anoka in 1930. From 1930 station brochure at radiotapes.com

Ninety years ago today (either October 1 or 2, 1924, depending on the source, the call letters WCCO were first heard over the airways. According to Wikipedia, the station came on the air on October 2.  But according to this 1949 station brochure, the actual sign-on date was October 1.

WLAGbecomesWCCOThe new call sign was reported in the radio section of the Milwaukee Journal on October 12.  It reported that WLAG radio had recently been refinanced by the Twin Cities Chamber of Commerce and the Washburn-Crosby Milling Company, and now bore the new call letters WCCO.  The article notes that the station carried the usual afternoon and evening features and concerts, but also noted the schedule of the station’s extensive market reports.

The station originally came on the air in 1922 as WLAG, but closed down in early 1924.  Civic pride demanded that the Twin Cities have a radio station, and a group of investors, primarily the Washburn-Crosby Company (predecessor to General Mills) financed the station, which took the call letters WCCO in honor of its benefactor.

The station originally operated on 720 kilocycles, but in 1928 was granted clear-channel status and moved to 810 kilocycles.  It’s familiar frequency of 8-3-0 is a result of the 1941 North American Radio Broadcasting Agreement, which moved the vast majority of U.S. broadcast stations up the dial slightly to accommodate Mexican clear-channel stations.

References

WCCO history at WCCO website

Historical materials at radiotapes.com

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More WW1 Mobile Wireless

WW1RadioCar

French or Belgian army wireless car, 1914.

A hundred years ago today, the October 1, 1914, issue of the Burlington (Vt.) Weekly Free Press carried a feature explaining how the automobile and aeroplane were revolutionizing warfare in the European war. And the article explains how the wireless telegraph was being used in connection with both. It notes that the most advanced practice was found in the use of automobile wireless outfits, which are in wide use by both the Begian and French armies. Those powerful stations had a transmitting radius of 225-250 miles, and were of infinitely more value than pack sets and cart sets, since the conflicting armies were clashing along such far-flung battle lines.

The article notes that the electricity was generated by the motor of the car, and these portable stations “with all the paraphenalia of electrical communication without wires may be speedily whisked from place to place, and as soon as the telescopic mast which is part of the outfit can be extended and erected the operators can go to work sending and receiving messages.”


Giant 1924 Receiver

Giant1924Receiver

Gertrude Belville is shown here in the November, 1924, issue of Radio Age tuning this giant radio set at the New York Radio World’s Fair. She reports that the volume of the set could be heard for miles around.



We Take You to London: 1939

 

RadioGuide092939Seventy-five years ago, American radio listeners were frequently hearing the phrases, “we take you to London,” “we take you to Paris,” and “we take you to Berlin,” as Americans learned how close they were to Europe’s troubles. As this item from Radio Guide for the week ending September 29, 1939, points out, we were close enough to hear a man breathe in Paris or the rustle of a paper in Berlin.

The diagram shows the example of how NBC would connect to its correspondents in London, Fred Bate or John Gunther. From NBC’s New York studios, the cue would go via telephone to the RCA short wave transmitter at Rocky Point, Long Island. The signal would be picked up by an English receiving station and sent by telephone to Broadcasting House in London. The English broadcast would go by telephone to the English short wave transmitter and picked up by the RCA receiving station at Riverhead, Long Island. From there, the signal would go back to NBC’s Radio City studios for retransmission to the network.

The process concludes when the American listener picks up the broadcase and says to himself “fervently and with conviction,” and alas, in vain, “We must stay out. We must stay OUT.”


1964 Console Stereo

AdmiralStereo

In the 1960’s, most self-respecting American homes would boast a console stereo in a prominent spot in the living room. The position would be second in honor only to that of the television.

And fifty years ago today, September 25, 1964, Life Magazine carried this ad from Admiral featuring this handsome unit. The Danish modern lowboy cabinet, made of genuine walnut veneers and hardwoods, contained an all solid state stereo featuring tuner and phonograph.


Belgian Carrier Pigeons, 1914

CarrierPigeons

Radio was coming to the fore as a method of communication during the great war, but the tried and true methods of the past were still being used. A hundred years ago today, the Philadelphia Evening Public Ledger for September 23, 1914, shows a carrier pigeon, which the paper notes were being used with great success by the Belgian Signal Corps. This bird is shown before its release containing a coded message. The french words bois (woods), pont (bridge) and cole (mine) are included in plain text.

In other war news, the paper reports that 31,200 Canadian troops, along with 7500 horses would be sent to Europe within the week, to be sent to the front immediately. In addition, the Canadians planned to recruit 19,000 more men who would be sent to the front before November.