The Sony ICR-9 is the world's first ultra-thin AM radio. It is still one of the thinnest radios you can listen to through speakers. To achieve thinness, button batteries are used. The radio has high sensitivity reception because of its Field Effect Transistor (FET) Radio Frequency (RF) amplifier, high selectivity due to compact and high-performance mechanical filter, and features a slide rule tuning dial on the side.
It is nicknamed 'Milli-Q'. It seems that it is named after its thickness of 9mm. The model number is not in line with the previous trend and is numbered 9. The world's first 10mm thick copy is being used. The catchphrase used in the catalog was "9mm Vertigo."
It has an unusual design with a power switch and dial scale on the side. Tuning and volume controls are located at the top.
It came with its own leather case. You can operate it and check the dials while it is in the case. However, the case blocks both sides of the speaker, so it seems like it should only be used with earphones.
This radio received the Good Design Award in 1978. Seven radio models received awards this year, including clock radios, but there were also four similar flat-screen radios, including the ICR-7 and Matsushita Electric's flat-screen radio.
RF amplification using FET is adopted. Due to the fact that the control unit was placed on the top, the bar antenna is on the bottom, and although the main body is made of aluminum, this is the only part where resin is used.
The speaker uses a thin unit with a thickness of 6 mm using samarium cobalt magnets, which were put into practical use around this time. The OSC coil is also long and thin and placed horizontally. It seems that a specially thin variable capacitor has been developed.
Compatible batteries are marked S-76. S-76 is a silver oxide battery and seems to be equivalent to SR44 or Eveready 357. It's the same size as the commonly seen LR44, but it seems to have a larger capacity.
One IC and five transistors are used, including FETs. The IC seems to be responsible for local oscillator and intermediate frequency amplification. As the advertisement says, FET (2SK107) is used for RF amplification. Other transistors seem to be used for low frequency amplification, etc.
Specifications:
Release: 1977
Power supply: S-76x2 (3V)
Transistors: 1 Integrated circuit, 5 transistors
Audio output: 70 mW
Bar antenna: 55mm
Speaker: 42mm
Control section: Power switch, volume, tuning
Reception frequency: AM 530-1605kHz
Terminal: Earphone
Series: Milli Q
Size: 65mm W x 110mm H x 9mm D
Weight: 91g
Color: silver
Manufacturing: made in Japan
Price at release: 14,800 yen (approximately $60 USD)
The Radiomuseum.com website does not list this model.
It is nicknamed 'Milli-Q'. It seems that it is named after its thickness of 9mm. The model number is not in line with the previous trend and is numbered 9. The world's first 10mm thick copy is being used. The catchphrase used in the catalog was "9mm Vertigo."
It has an unusual design with a power switch and dial scale on the side. Tuning and volume controls are located at the top.
It came with its own leather case. You can operate it and check the dials while it is in the case. However, the case blocks both sides of the speaker, so it seems like it should only be used with earphones.
This radio received the Good Design Award in 1978. Seven radio models received awards this year, including clock radios, but there were also four similar flat-screen radios, including the ICR-7 and Matsushita Electric's flat-screen radio.
RF amplification using FET is adopted. Due to the fact that the control unit was placed on the top, the bar antenna is on the bottom, and although the main body is made of aluminum, this is the only part where resin is used.
The speaker uses a thin unit with a thickness of 6 mm using samarium cobalt magnets, which were put into practical use around this time. The OSC coil is also long and thin and placed horizontally. It seems that a specially thin variable capacitor has been developed.
Compatible batteries are marked S-76. S-76 is a silver oxide battery and seems to be equivalent to SR44 or Eveready 357. It's the same size as the commonly seen LR44, but it seems to have a larger capacity.
One IC and five transistors are used, including FETs. The IC seems to be responsible for local oscillator and intermediate frequency amplification. As the advertisement says, FET (2SK107) is used for RF amplification. Other transistors seem to be used for low frequency amplification, etc.
Specifications:
Release: 1977
Power supply: S-76x2 (3V)
Transistors: 1 Integrated circuit, 5 transistors
Audio output: 70 mW
Bar antenna: 55mm
Speaker: 42mm
Control section: Power switch, volume, tuning
Reception frequency: AM 530-1605kHz
Terminal: Earphone
Series: Milli Q
Size: 65mm W x 110mm H x 9mm D
Weight: 91g
Color: silver
Manufacturing: made in Japan
Price at release: 14,800 yen (approximately $60 USD)
The Radiomuseum.com website does not list this model.