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LW/MW/FM Stereo Tuner ST520L

LW/MW/FM Stereo Tuner ST520L; Marantz Sound United (ID = 2550208) Radio LW/MW/FM Stereo Tuner ST520L; Marantz Sound United (ID = 1871928) Radio
LW/MW/FM Stereo Tuner ST520L; Marantz Sound United (ID = 1871929) Radio LW/MW/FM Stereo Tuner ST520L; Marantz Sound United (ID = 1871930) Radio
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LW/MW/FM Stereo Tuner ST520L; Marantz Sound United (ID = 2550208) Radio
Marantz Sound United: LW/MW/FM Stereo Tuner ST520L [Radio] ID = 2550208 1400x260
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For model LW/MW/FM Stereo Tuner ST520L, Marantz (Sound United LLC); Vista, CA: auction item_233389450376 seller retro-hifidelity
Country:  United States of America (USA)
Manufacturer / Brand:  Marantz (Sound United LLC); Vista, CA
Year: 1982 ? Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) Semiconductors present.
Main principle PLL, Phase-locked loop
Wave bands Broadcast, Long Wave and FM or UHF.
Details Hi-Fi equipment
Power type and voltage Alternating Current supply (AC) / 110-120; 220-240 Volt
Loudspeaker - For headphones or amp.
Power out
from Model: LW/MW/FM Stereo Tuner ST520L - Marantz Sound United LLC;
Material Metal case
Shape Book-shelf unit.
Dimensions (WHD) 416 x 55 x 302 mm / 16.4 x 2.2 x 11.9 inch

A hifi 3 band AM/FM stereo digital synthesizer tuner with a digital frequency display. With a 5 LED Signal Strength meter, Stereo indicator, push buttons for LW, MW, FM, Tuning Up and Tuning Down, Tuning Scan and Memory, 7 Preset buttons for AM (4 x MW, 3 x LW radio stations) and 7 FM radio stations and Muting/Mode. On the back, a clip-on AM loop antenna, terminals for AM and FM antennae,  RCA phono Line Output sockets.

FM Tuner Section 
Frequency Range87.5-108MHz
  DIN Mono (S/N 26dB, 75Ω)
  DIN Stereo (S/N 46dB, 75Ω)
Selectivity Adjacent Channel 98MHz70dB
Image Frequency Rejection 78dB
IF Rejection90dB
Spurious Response95dB
Signal/Noise Ratio DIN 
70dB Mono, 63dB Stereo
76dB Mono, 68dB Stereo
Total Harmonic Distortion:0.1% Mono, 0.2% Stereo
Frequency Response30Hz-15kHz +0,-1 dB
Stereo Separation 45dB
Channel Balance0.2dB
MW Tuner Section 
Frequency Range522-1611kHz
Sensitivity (S/N 20dB 30% Mod., 999kHz)10µV
Selectivity 999kHz ±9kHz40dB
Image Rejection at 999kHz 45dB
IF Rejection at 999kHz70dB
Signal/Noise Ratio at 999kHz50dB
Total Harmonic Distortion at 999kHz0.3%
LW Tuner Section 
Frequency Range153-281kHz
Sensitivity (S/N 20dB 30% Mod., 218kHz)100µV
Image Rejection at 218kHz45dB
IF Rejection at 218kHz55dB
Signal/Noise Ratio at 218kHz50dB

Power requirements: 110-120/220-240 V AC 50/60Hz with voltage selector

Power consumption: 9 watts

See also the similar 2 band Marantz AM/FM Stereo Tuner ST-520 without LW.

Net weight (2.2 lb = 1 kg) 3.3 kg / 7 lb 4.3 oz (7.269 lb)
Mentioned in -- Original prospect or advert (1982 Marantz Klang und Qualität catalogue)
Literature/Schematics (1) - - Manufacturers Literature (Owner's manual Marantz ST520/ST520L)

Model page created by Ciro Guidi. See "Data change" for further contributors.

All listed radios etc. from Marantz (Sound United LLC); Vista, CA
Here you find 538 models, 529 with images and 84 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.