Category Archives: Television History

1950 SILAVOX Private TV Listener

This ad appeared 75 years ago this month, in the May 1950 issue of Radio Retailing, for the SILAVOX, manufactured by Skinner & Pelton, Inc., 100 N. LaSalle St., Chicago. The add-on device allowed you to use headphones with your television. For private listening without annoying others in the household, the speaker could be shut off. But for the hard of hearing, you could leave the speaker turned on. Both the headphone and the speaker had independent volume controls.

Screenshot 2025-05-22 12.09.28 PMWhen I worked for Radio Shack in an earlier lifetime, we sold a similar device, shown here in the 1980 catalog. One day, we received an urgent communication from headquarters in Forth Worth that they were to be immediately removed from the shelves. I never heard the exact details, but I believe that someone had managed to electrocute themselves.

Many TV sets of the day had a hot chassis, meaning that there was a 50/50 chance that the chassis was hooked to the hot side of the AC power connection. In addition, there were extremely high voltages inside the set, and even with the set unplugged, there was a possibility that the capacitors still held a deadly charge. So the prospect of a consumer installing one of these was problematic. And if they did the job wrong (or maybe even if they did it right), there was a chance of high voltage running to the earphone attached to someone’s head. It’s actually surprising that they lasted as long as they did.



Wavelength in Feet?

Screenshot 2025-05-20 11.43.35 AMHere’s something I’ve never seen before. Radio News carried lists of new TV stations to come on the air, and periodically had complete lists. This one is from the May 1955 issue.

Among the data presented is the wavelength (of the video carrier), but it’s given in feet, and not meters!  The only reason I can think of for this is for antenna construction.  If you needed to build an antenna of a half wavelength, then  you would probably be measuring in feet, and I guess it would save a little bit of time to have the conversion done for you.

But almost anyone building an antenna would know that if you started with frequency, then the formula for the length of a dipole was 468/f.  And that formula took into account end effects, and was really 95% of the true wavelength.  Has anyone else ever seen radio wavelength expressed in feet?



1950 Coin Operated Television

1950AprRadioNewsThere was money to be made seventy-five years ago in coin operated televisions, according to the Covideo Coin Operated Television Company, New York, whose ad appeared in the April 1950 issue of Radio News.

Their sets were “specially built” and would play thirty minutes for a quarter ($3.31 in 2025 dollars). Thousands of locations were available, and they would yield immediate profits and steady income.

Unfortunately, they were perhaps a bit overly optimistic in some of their advertising, because a two years later, the Federal Trade Commission slapped them with a Cease and Desist Order.  Among other things, they were prohibited from representing that they manufactured the sets or any component parts. They were also prohibited from claiming that they maintained a staff of competent engineers and technicians, or that they had adequate facilities for research and experimentation.



TV Comes to Astoria, OR, 1950

1950AprilPMShown here are Ed Parsons, W7FKZ, and his wife Grace. Parsons was the owner of KAST in Astoria, Oregon. It was Mrs. Parsons who came up with the idea of having television, and she knew that if anyone could do it, it was Parsons. In addition to running the station, Parsons was the go-to man for the town’s fishing boats when they needed electronic equipment repaired.

The problem was that Astoria was 140 miles away from the closest TV station, KRSC (later KING-TV), channel 5, in Seattle. Complicating the problem were mountains along the path. Parsons took up the challenge, and drove every inch of the city, and discovered that there were fingerlike bands where a signal was making it. One of those bands included his penthouse apartment, and he set up shop there. While his wife watched the set for a signal, he adjusted the antenna, communicating by telephone.

Eventually, he had success, and his house had constant visitors. Eventually, he set up a rudimentary Cable TV system, retransmitting the signal on channel 2 into a coaxial cable, which could be run up to 2000 feet. Within this radius were a number of businesses who had sets running in their shop windows.

This story appeared in the April 1950 issue of Popular Mechanics. A more in-depth biography of Parsons can be found at this link.



Bad Horizontal Hold, 1950

1950AprRadioNews2Youngsters won’t appreciate the perils involved in watching television back in the day. Here, we see the effects of bad horizontal hold. The image appeared in the April 1950 issue of Radio News.



Visie-Talkie, 1945

1945AprilRadioCraft11945AprilRadioCraft2Eighty years ago today, April 1, 1945, Radio Craft magazine introduced what is properly the ancestor of the modern cell phone. It was the next logical progression after the walkie talkie and the handie-talkie, namely the visie-talkie.

The extreme miniaturization was possible due to the elimination of a needless step in television, namely, scanning. The article correctly pointed out that the human eye, just like a TV camera, contains a lens. But that’s where the similarity ends, since the TV camera has a complicated scanning mechanism. The human eye has a retina, and the article explains how this was duplicated with the use of condensinators.

Undoubtedly, the idea was put on hold due to the war, and not used again for many decades. But eighty years ago, this device demonstrated that convenient handheld video communication was possible.



TV Behind the Scenes, 1950

1950MarRadioNewsSeventy-five years ago this month, the March 1950 issue of Radio News went into details of what went on behind the scenes to put a television program on the air. The cover image is a color shot of the scene.

The program they were airing was Howdy Doody, on New York station WNBT.



TV in 1950: The Bomb!

1950MarRadioRetailingSeventy-five years ago this month, the cover of the March 1950 issue of Radio Retailing cheerfully predicted that television sales would be the atomic bomb of the year! TV sales were set to outpace refrigerators, washers, and even automobiles.



Converting Your TV to a Big Screen, 1950

1950MarPSShown here is Popular Science author Robert Gorman upgrading his 10-inch television to a “big screen” 16-inch set. He owned a 10-inch RCA 630-type circuit (which he had built from a kit). That circuit was widely distributed, both by RCA and other well-known brands. It had enough power to run the larger picture tube, and an article in the March 1950 issue of Popular Science showed how to make the conversion.

The new tube had the same pin configuration, and only a few small changes to the circuit were required. The larger tube required adding some wiring to the socket, and the article warned of the importance of using wire insulated for the high voltages involved.

The larger tube required a new cabinet. An accompanying article showed how to make one. The cost of the cabinet was a significant portion of a TV’s cost, so even if you were buying a new TV, you might save money by just buying the chassis and putting it into a cabinet of your own making.



1945 Television Theatre

1945MarRadioRetailingThis idea to promote television appeared in Radio Retailing 80 years ago this month, March 1945. Anticipating a television boom after the war, the magazine suggested that the idea might promote interest in television. Dealers who were equipped with sets could invite neighbors and customers who might be interested but had no set.

The address on this invitation is residential, and undoubtedly the home of O.H. Caldwell and Mildred B. Caldwell. The location is about 30 miles from the Empire State Building, so would pull in a good signal with a suitable antenna.

Caldwell, one of the original commissioners of the Federal Radio Commission, is described as an editor of the magazine.  His home was said to be a home of the future, with many modern electronic devices, including, apparently, the television.