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FM Stereo / FM-AM Tuner ST-4950

FM Stereo / FM-AM Tuner ST-4950; Sony Corporation; (ID = 1384822) Radio FM Stereo / FM-AM Tuner ST-4950; Sony Corporation; (ID = 1611444) Radio
FM Stereo / FM-AM Tuner ST-4950; Sony Corporation; (ID = 1384823) Radio FM Stereo / FM-AM Tuner ST-4950; Sony Corporation; (ID = 1384824) Radio
FM Stereo / FM-AM Tuner ST-4950; Sony Corporation; (ID = 1384825) Radio FM Stereo / FM-AM Tuner ST-4950; Sony Corporation; (ID = 1384826) Radio
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FM Stereo / FM-AM Tuner ST-4950; Sony Corporation; (ID = 1384822) Radio
Sony Corporation;: FM Stereo / FM-AM Tuner ST-4950 [Radio] ID = 1384822 933x383
Select picture or schematic to display from thumbnails on the right and click for download.
For model FM Stereo / FM-AM Tuner ST-4950, Sony Corporation; Tokyo:
aus ebay, #170974408569, Verkäufer pflavs
 
Country:  Japan
Manufacturer / Brand:  Sony Corporation; Tokyo
Year: 1975/1976 Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) Semiconductors present.
Main principle Superhet with RF-stage; ZF/IF 455 or 468/10700 kHz
Wave bands Broadcast (BC) and FM or UHF.
Details Hi-Fi equipment
Power type and voltage Alternating Current supply (AC) / 100; 110; 117; 120; 220; 240 Volt
Loudspeaker - For headphones or amp.
Power out
from Radiomuseum.org Model: FM Stereo / FM-AM Tuner ST-4950 - Sony Corporation; Tokyo
Material Metal case
Shape Book-shelf unit.
Dimensions (WHD) 460 x 168 x 331 mm / 18.1 x 6.6 x 13 inch
Notes

A hi-fi AM/FM stereo tuner with an analogue dial, housed in a wooden case, or in a metal case (USA). With meters for Signal strength and Tuning, Stereo indicator lamp, rotary Tuning control, rotary Function switch (AM, FM Mono, FM Stereo), push button switches for Muting, Multipath, Hi Blend and AFC. On the back, an AM ferrite rod antenna, terminals for AM and FM antennae, RCA phono sockets fot Fixed Line Output and for Variable Line Output (with output level adjusters) and for FM Discriminator output.  

Specification 
FM Section 
Tuning range87.5 - 108MHz
Intermediate frequency10.7MHz
Antenna terminals300Ω balanced, 75Ω unbalanced
Sensitivity1.9µV (5.5dB), IHF
1.5µV (3.5dB), S/N 26dB
 (1kHz, 40kHz deviation)
Image rejection70dB
IF rejection100dB
Spurious rejection100dB
AM suppression56dB
Capture ratio1.0dB
Selectivity80dB, IHF
S/N ratio70dB
Frequency response20 - 15,000Hz ±1dB
Harmonic distortionMono 0.15%, Stereo 0.3% at 400Hz,
 100% (75kHz deviation) modulation
Stereo separation> 40dB at 400Hz and 1kHz
Muting level< 5µV
AM Section 
Tuning range530 - 1,605kHz
Intermediate frequency455 kHz (USA, PX Model)
468 kHz (UK, AEP Model)
AntennaBuilt-in antenna and
external antenna terminal
Sensitivity250µV/m (48dB/m), built in antenna
100µV/m (40dB/m), external antenna
Image rejection45dB at 1,000kHz
S/N ratio50dB
Harmonic distortion0.5%
Output Section 
Voltage/ImpedanceFIXED: 750mV / 10kΩ
VARIABLE: 0 - 2V / 3kΩ
FM DISCRI: 150mV / 2.2kΩ

Versions/Power requirements
USA Model        /  120V AC 60Hz
UK, AEP Model  /  110, 117, 220 or 240V AC 50/60Hz with voltage selector
PX Model           /  100, 120, 220 or 240V AC 50/60Hz with voltage selector

Power consumption: 22W (USA Model), 25W (UK, AEP, PX Model)

Dimensions, Weight
USA Model                /  430(w) x 168(h) x 331(d) mm, weight 7.7 kg
UK, AEP, PA Models  /  460(w) x 168(h) x 331(d) mm, weight 8.6 kg
Net weight (2.2 lb = 1 kg) 8.6 kg / 18 lb 15.1 oz (18.943 lb)
Price in first year of sale 1'990.00 FRF
Mentioned in -- Original prospect or advert (1975-76 Sony HiFi-Stereo-/Quadro-Gerate katalog)
Literature/Schematics (1) - - Manufacturers Literature (Service manual ST-4950 dated 1975)

Model page created by Gottfried Silberhorn. See "Data change" for further contributors.

All listed radios etc. from Sony Corporation; Tokyo
Here you find 3557 models, 3410 with images and 753 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.

Collection of Patrice Schoser (F)
  
rmXorg