![]() Crosley "Gembox" Model 608 1928 |
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| Virtual Tour |
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| Company History
§ The World of 1928 § Radio in 1928 § Schematic § Links § Advertisements § More Pictures § Musicone Speaker Pictures § |
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Cabinet Style: Table Tube Count: 6 Circuit Type: TRF/Neutrodyne Power: AC w/transformer* Bands: Broadcast Tubes: '26 (3), '27, '71, '80 Speaker: Cone. Shown with a Crosley "Musicone" speaker. Original Cost: $65.00 (What cost $65.00 in 1928 would cost $693.18 in 2005 dollars) *First AC model for Crosley |
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The problem of feedback on the more powerful stations (caused by using triodes as RF amplifiers) was solved using a "Neutrodyne" circuit developed by Louis Alan Hazeltine The sensitivity of this set is
adjusted using a regeneration control on the lower
left. Note that the dial is still calibrated in "log" numbers (1-100) instead of
frequencies like today's radios which meant keeping a log of where stations could be found
on the dial. |
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| Company History
In 1920, Powel Crosley
(1886-1961) set out to produce an affordable radio and went on to build one of the most
successful electronics companies of the early 20th century, earning him the reputation
"The Henry Ford of Radio". In 1922 Crosley started radio station WLW, which, in
1934, would become the most powerful station in the country (500,000 watts). In 1935
Crosley introduced the "Roamio", the first car radio. |
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| Radio in 1928 | |||
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· President:
Calvin Coolidge Headlines · U.S. voters elect Herbert
Hoover president. Oscars: · Outstanding Picture: "Wings" · World Series: NY Yankees d. St. Louis Cardinals (4-0) World Headlines
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· "Voice of Firestone"
music show begins on NBC. Listening to the Radio in 1928 NBC
Blue) 7:00 Cooks Travelogue (Talk) |
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| Crosley Links | |||
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The current Crosley
Radio Company site |
Radio
Attic's Crosley picture archive. |
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| From "Radio News" May 1930. Schematic also available at NostalgiaAir.org |
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| Click Here to See Another Ad
Click Here to See Some Advertising Postcards
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| Tuner Drive Gear | Chassis | ||
![]() On the left is the original potmetal gear in poor condition. On the right is a RRP-0130 Pinion Gear from Robinson Racing Products and a spacer.
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| The original cone on the left.
Obviously in poor condition. Using it as a pattern I created a replacement
"cone". The coils and mechanical links were pot metal that had disintegrated and
were beyond repair. |
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| Without a real cone, coils or mechanical links the speaker
wouldn't work. These modern speakers face the rear of the Musicone. Note the output transformer to match impedance. |
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