Hitachi FT-440 tuner

What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

Hitachi FT-440 tuner

Hitachi model FT-440 AM/FM Stereo Tuner

Specifications:

Circuitry: AM/FM 2-band stereo tuner

Semiconductors: 12 Transisors; 1 FED; 2 ICs; 23 Diodes; 2 LED

FM Section

Frequency Range: 88 - 108 MHz

Usable Sensitivity: 1,7 µV (IHF)

Image Rejection: 75 dB

IF Rejection: 100 dB

Distortion:

Monaural : 0,1% (400 Hz)

Stereo : 0,25% (400 Hz)

Signal-to-Noise ratio: 76 dB

Selectivity: 80 dB (±400 Hz)

Stereo Separation: 50 dB (1 kHz)

Capture Ratio: 1,0 dB

Antenna Input Impedance: 300 Ω balanced type; 75 Ω unbalanced type

AM Section

Frequency Range: 530 - 1,605 kHz

Usable Sensitivity: 12 µV (IHF), 250 µV/m (bar antenne)

Image Rejection: 45 dB (1000 kHz)

IF Rejection: 388 dB

Selectivity: 34 dB (±10 kHz)

Signal-to-Noise Ratio: 45 dB

Output Voltage:

AM : 0 -165 mV (variable) [400 Hz, 30% modulation]

FM : 0 - 550 mV (variable [400 Hz, 100% modulation]

Power Requirements: AC 120 V 60 Hz or 110 V, 120 V, 220 V, 240 V 50/60 Hz

Power Consumption: 12 W

Dimensions (W x H x D): 435 x 166 x 377 mm

Weight: 7 kg (15,4 lbs)

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What is stereo?