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Discrepancy Sheet

Quick! To the Fallout Shelter!

Posted by Jim Kuzman on March 25, 2015

National Atomic Testing MuseumAsk anyone what they think of first when they hear “Las Vegas” and they’re likely to mention the retina-searing lights of the famous Vegas strip, the dazzling casinos, the over-the-top luxury hotels, the glitzy shows, and if they’re old enough, maybe even the Rat Pack at The Sands.

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Topics: Technology

Stromberg Carlson and Sony clock radios

Posted by Tom Vernon on March 25, 2015

Stromberg-Carlson clock radioThis installment of Found in the Attic is a twofer. It features a genre of consumer electronics that is rapidly disappearing from the store shelves: the clock radio. As millennials enter the consumer market in larger numbers, sales of clock radios decline. Why? They use the alarm function built into their smartphones, and have no need or interest in purchasing an additional item.

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Topics: Vintage Electronics

Found in the Attic: McMartin TR-66 FM-SCA receiver

Posted by Tom Vernon on March 4, 2015

McMartin TR-66 FM-SCA receiverBroadcasting, by its very definition, means using an RF signal to reach as large an audience as possible. So the opposite of broadcasting is narrowcasting, targeting a small, niche of the population. In the Internet age, with web streams and podcasts, it’s easy to reach out to a handful of people scattered across the globe. Just twenty short years ago, narrowcasting to a small audience was a much more involved affair. This month's Found in the Attic examines a 1960s-vintage McMartin TR-66 FM-SCA receiver, and the related technology of FM subcarriers.

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Topics: Vintage Radio Technology

Found in the Attic: Heath BC-1A AM tuner

Posted by Tom Vernon on January 28, 2015

Heath BC-1AThe debate about high-quality AM signals vs. adjacent channel interference and occupied bandwidth has been going on longer than most of us have been alive. One of the sticking points was always the issue of 'who goes first?' Station engineers were reluctant to spend the time, money and energy to perfect their signal, only to have it trashed by receivers with misaligned 5 Khz IF stages and a 3-inch speaker. Receiver manufacturers, on the other hand, didn't want to build high-fidelity AM radios when most of the stations sounded like crap anyway.

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Topics: Vintage Electronics

Suitcase Radio: Zenith Portable Receiver

Posted by Tom Vernon on October 28, 2014

Zenith PortableOne of the great things about radio is its portability. Take it to the beach, in your boat, on a train. Take it just about anywhere. What's changed over the years is how easy it is to do that. Nowadays we take the portability of radio for granted, as we stuff a smart phone with a built-in FM tuner in our pocket and head out the door. It wasn't always that easy. This month's Found in the Attic examines suitcase radios, in particular the Zenith 6G601D Universal.

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Topics: Vintage Electronics