Espectacular radio da famosa marca Rotel em impecável estado de conservação e funcionamento.
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Country
Japan
Manufacturer / Brand
Rotel, The, Co., Ltd.; Tokyo
Year
1976
Category
Broadcast Receiver - or past WW2 Tuner
Number of Transistors
Semiconductors present.
Semiconductors
Main principle
Superheterodyne (common)
Wave bands
Broadcast (BC) and FM or UHF.
Details
Hi-Fi equipment
Power type and voltage
Alternating Current supply (AC) / 120; 220; 240 Volt
Loudspeaker
- For headphones or amp.
Material
Metal case
from Radiomuseum.org
Model: AM/FM Stereo Tuner RT-425 - Rotel, The, Co., Ltd.; Tokyo
Shape
Book-shelf unit.
Dimensions (WHD)
430 x 143 x 261 mm / 16.9 x 5.6 x 10.3 inch
Notes
An AM/FM stereo hi-fi tuner housed in a metal case covering MW, FM mono and FM stereo. With an FM Tuning/AM Signal Strength meter, switches for Muting and Hi-Blend filter, an adjustable AM ferrite bar aerial on the back, terminals for AM and FM antennae and RCA phono sockets for Line Output.

Specification
FM Tuner Section
Usable Sensitivity
Mono
Stereo 10.7dBf (1.9µV/300Ω)
18.2dBf (4.9µV/300Ω)
Signal-to-Noise Ratio (at 65dBf)
Mono
Stereo 70dB
65dB
Distortion (at 65dBf)
100Hz & 1kHz
6kHz 0.2% (mono), 0.3% (Stereo)
0.3% (mono), 0.4% (Stereo)
Frequency Response 30Hz - 15,000Hz + 0.2dB,-1dB
Capture Ratio 1.5dB
Alternate Channel Selectivity 50dB
Stereo Separation 30dB (30Hz - 15kHz)
Antenna Input 300Ω balanced
75Ω unbalanced
AM Tuner Section
Sensitivity 240µV/m (IHF, Ferrite antenna)
12µV (IHF, ext. antenna)
Selectivity 25dB
Signal-to-Noise Ratio 50dB
Antenna Built-in ferrite loopstick antenna
Versions/Power requirements
120V AC 60Hz
220V AC 50Hz
240V AC 50Hz
120, 220, 240V AC 50/60Hz (switchable)

Power Consumption 20 watts max.

Net weight (2.2 lb = 1 kg)
5.7 kg / 12 lb 8.9 oz (12.555 lb)