Toshiba ST-500 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

Toshiba ST-500 tuner

AM / FM Stereo Tuner

4-gang tuning condenser and dual gate 4-pole FET's in FM front end

Ceramic filters and two ICs consist of differential amplifier limiter in FM IF circuit

Linear, wide-scale dial, and two tuning meters, and AFC on/off switch, and FM muting circuit

RF amplification, double stage AGC and ceramic filter for low distortion and high AM sensitivity and for normal operation opposing strong signals

High-blend switch and manual FM/FM-stereo switch for improving Signal-to-Noise Ratio at weak FM stereo signal

Output terminal for future FM 4-channel broadcasting

Natural walnut cabinet

Specifications

FM Section

Tuning Range: 88 - 108 MHz

Intermediate Frequency: 10,7 MHz

Sensitivity: 1,8 µV (IHF); 1,8 µV (S/N=30 dB)

Signal-to-Noise Ratio : 66 dB

Capture Ratio: 1,5 dB

Selectivity: 80 dB (IHF)

Image Rejection: 80 dB

IF Rejection: 80 dB

Spurious rejection: 100 dB

AM Suppression: 50 dB (IHF)

Frequency Response: 20 - 15,000 Hz ±1 dB

Antenna: 300 Ω (balanced); 75 Ω (unbalanced)

Harmonic Distortion

Mono : 0,2% at 400 Hz (100% mod.)

Stereo : 0,5% at 400 Hz (100% mod.)

FM Stereo Separation: better than 35 dB at 1,000 Hz

19 kHz, 38 kHz Suppression: 50 dB

AM Section

Tuning Range: 530 - 1605 kHz

Intermediate Frequency: 455 kHz

Sensitivity: 15 µV (IHF)

Signal-to-Noise Ratio: 45 dB

Image Rejection: 70 dB

Selectivity: 30 dB (±10 kHz)

IF Rejection: 70 dB

Overload: 2 V/m at 1,000 kHz

Harmonic Distortion: 1%

General

Circuit: Superheterodyne [AM & FM] 2 ICs ; 3 FET's; 23 Transistors; 23 Diodes

Power Source: AC 100/120/220/240 V ; 50/60 Hz

Power Consumption: 25 W

Output Level: 600 mV (fixed, 100% modulation) 0 - 2 V (variable)

Dimensions (W x H x D): 400 x 125 x 333 mm ( 15-3/4" x 4-7/8" x 12")

Weight: 5,6 kg (14-5/16")

Accessory: FM feeder antennas, connecting cord, polishing cloth,

Pagine

What is stereo?