Sony - ST-5055A - Sintonizador

The ST-5055A is a **Kenwood** FM stereo FM/AM tuner manufactured in the 1970s. This device was an analog audio device of its time, offering high quality radio reception performance and featuring a retro design. Below are the main features.

Main Features
High-sensitivity tuner: Captures AM/FM radio signals well and plays them back with stable sound quality.
FM stereo function: FM broadcasts can be enjoyed in stereo, providing clear and expansive audio.
Built-in analog meter: Equipped with an analog meter for use when tuning for accurate channel matching.
Retro design: The retro design has a vintage 70's look and is popular among audiophiles.
Sound Quality and Performance
Kenwood's ST-5055A is known as one of the best performing tuners of its era, especially for its FM stereo sound quality. Its clear audio and stable reception capabilities allow users to enjoy music and news in high quality.

Collector Value
As vintage audio equipment, they are still gaining value among collectors and audiophiles. In particular, well-maintained and original components are often sold at high prices.

[ item condition ]
This is a used product.
■ There are some stains and scratches from use.
FIXED and VARIABLE are both in good condition.
There are no Hz deviations and it is clean.

[Product Details ]
Brand: SONY
Model: ST-5055A
Model: FM/AM Tuner
■Circuit method: Super heterodyne method
FM tuner section]
Antenna terminal: 300Ω balanced type 75Ω unbalanced type
Reception frequency: 76MHz to 90MHz
Intermediate frequency: 10.7MHz
Operating sensitivity: 2.2μV (IHF)
Sensitivity: 1.7μV(S/N=30dB)
S/N ratio: 68dB
Capture ratio：1.0dB
Selectivity: 70dB(IHF)
Image Disturbance Ratio: 45dB
IF interference ratio: 95dB
Spurious Interference Ratio: 75dB
AM suppression ratio: 45dB(IHF)
Frequency response: 30Hz to 15kHz, +1 to -3dB
Distortion: mono: 0.4% (400Hz, at 100% modulation) stereo: 0.6% (400Hz, at 100% modulation)
FM stereo separation: 35dB or better (400Hz)
Output voltage/impedance: Fixed output: 750mV/10kΩ Variable output: 0 to 1.5V/1.8kΩ
AM tuner section
Antenna: Ferrite bar antenna with external antenna terminal
Reception frequency: 530 kHz to 1,605 kHz
Intermediate frequency: 455kHz
Sensitivity: 46dB/m (with bar antenna) 100μV (with external antenna)
S/N ratio: 50dB(50mV/m)
Image rejection ratio: 70dB (1,000kHz)
IF rejection ratio: 65dB (1,000kHz)
Distortion ratio: 0.5
Comprehensive】[General
Semiconductors used: Transistors: 21 (receiver circuit x16, attached circuit x5) FETs: 2 Diodes: 14 ICs: 2
Power supply: AC100V, 50Hz/60Hz
Power consumption: 17W
Dimensions: W416 x H120 x D285mm
■Weight: 4.8kg



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