Yamaha, Sony, Onkyo - TX-592RDS / ST-242L / T-4650 Hi-fi set

Sony tuner

Type: ST-242L.
In good condition.
Color: Silver.

Semiconductors present
Main principle: Superheterodyne (common); IF 450/10700 kHz
Golf bands: Broadcast, Long Golf, and FM or UHF.
Power type and voltage: alternating current supply (AC) / 220-240 Volt
Material: Metal housing
Model: FM-AM-programmable tuner ST-242L - Sony Corporation; Tokyo
Dimensions (BHD): 430x110x315mm
Notes:
A 3-band AM/FM stereo tuner with an analog rotary knob. Featuring manual tuning and five FM preset stations. Equipped with a signal strength indicator with 5 LEDs, indicators for FM Tuned and FM Stereo, a rotary knob for band selection (FM, MW, LW), push buttons for FM program, mode/damping, and manual tuning, 5 push buttons for programmed FM tuning, an integrated, adjustable ferrite rod AM antenna at the rear, connections for AM and FM antennas, and a line output with RCA connectors.

Specification :
FM tuning section
Tuning range 87.5 - 108 MHz
Intermediate frequency 10.7 MHz
Sensitivity at 46 dB quiet.
(at 40 kHz deviation) 4.0 µV (mono), 45 µV (stereo)
Usable sensitivity IHF 1.8 µV, 10.3 dBf
1.6 µV (S/N = 26 dB, 40 kHz deviation)
Signal-to-noise ratio 69 dB (mono), 64 dB (stereo)
Harmonic distortion at 1 kHz 0.2% (mono), 0.3% (stereo)
IM distortion 1 kHz 0.2% (mono), 0.3% (stereo)
Separation 45dB at 1kHz
Frequency response 40Hz - 12.5kHz +0.5dB, -1dB
Selectivity at 300 kHz
(at 40 kHz deviation, S/N = 26 dB) 40 dB
Gain ratio 1.5 dB
AM suppression ratio 48 dB
Image response ratio 45 dB
Incorrect response ratio 70dB
Damping threshold approximately 5µV.
Output level 450 mV, 15 kΩ (deviation of 40 kHz)
Antenna connections: 300Ω balanced, 75Ω unbalanced
AM Tuner Section
Adjustment areas
MW
LW 522 kHz - 1602 kHz
150 kHz - 350 kHz
Intermediate frequency 450 kHz
Practical sensitivity
MW 250 µV/m Built-in antenna (1,000 kHz)
100 µV external antenna (1,000 kHz)
LW 500 µV/m Built-in antenna (230 kHz)
100 µV External antenna (230 kHz)
Signal-to-noise ratio 52 dB (50 mV/m)
Harmonic distortion 0.3% (50 mV/m, 400 Hz)
Selectivity 35 dB (9 kHz)
Antenna Built-in ferrite rod antenna.
external antenna connection
Versions / Power requirements
VK / 240 V AC 50 Hz (internally switchable to 220 V)
AEP / 220 V AC 50 Hz (internally switchable to 240 V)

Power consumption: 15 W


Onkyo T-4650 :

Integra Quartz Synthesized FM Stereo/AM Tuner RI
Weight: 4.8kg
Approximate: 455x85x355mm WHD.
In very good condition.
Packed very well and shipped quickly.

Manufacturer: Onkyo
Model: T-4650
Year of manufacture: 1991 to 1994
Made in: Japan
Color: black
Remote control: no, but it can be operated remotely via IR bus.
Dimensions (W/H/D): 455 x 90 x 364 mm
Weight 4.8 kg
Power consumption: 20 W

Connections :
Number of outlets
Line out
Number of entrances: 3
1 x FM antenna (75 Ohm)
AM antenna

Technical data
Useful input sensitivity
FM-mono: 0.8 µV
FM stereo: 20.0 µV

MW: 25 µV
50 dB damping threshold (IHF)
VHF-mono: 1.7 µV
VHF stereo: 17 µV

Selectivity (± 300 kHz, 40 kHz deviation): 60 dB
VHF common mode selection: 1.3 dB
Image frequency attenuation
FM: 90 dB
MW: 40 dB IF attenuation:

FM: 90 dB
MW: 40 dB
Noise-to-voltage ratio
VHF-mono: 85 dB (IHF)
VHF-stereo: 80 dB (IHF)
MW: 40 dB
Total harmonic distortion
FM-mono: 0.10%
FM stereo: 0.20%

MW: 0.70%
Frequency range FM: 30 - 15,000 Hz (± 1.5 dB)
Stereo channel separation: 45 dB (1 kHz)
FM damping threshold: 17.2 dBf
Antenna inputs: 75 Ohm asymmetrical
RDS: no, but input possible, for example HR 3.
Station memory: 40 in 8 groups
Special features: Automatic display for transmitter memory.

Yamaha Tuner TX-592RDS

Specifications: Type: Mono/Stereo RDS tuner
Tuning bands: FM, MW
Voting scale: Digital
FM frequency range: 87.5 to 108 MHz
MW tuning frequency range: 531 to 1611 kHz
Sensitivity: 0.9 µV (FM), 200 µV (MW)
Signal to noise ratio: 70 dB (FM), 50 dB (MW)
Deformation: 0.2% (FM), 0.3% (MW)
Selectivity: 70 dB (FM)
Frequency range: 20 Hz to 15 kHz (FM)
Output: 500mV (FM), 200mV (MW)
Dimensions: 435 x 86 x 289 mm
Weight: 3.2 kg
Year: 1998