Description
Product descriptionThe FM/AM tuner is equipped with a newly developed digital quartz system and has improved reception accuracy.Equipped with Sansuis original newly developed digital quartz lock system.This method uses a crystal oscillator as a reference and locks the receiving frequency every 100 kHz. Even if an error occurs in the local oscillation frequency, the D/A converter generates a feedback voltage proportional to the error. The receiving frequency is maintained with the high precision of crystal oscillation.Because this method digitally processes the reception frequency, spurious interference and deterioration of the SN ratio that adversely affect sound quality and reception performance are minimal, and other circuits and specifications are hardly affected, achieving excellent sound quality. Im doing it. Furthermore, the lock width is sufficiently large and the frequency is accurately displayed digitally, making tuning operations easy.In addition, it has a built-in automatic lock ON/OFF circuit, so it is possible to maintain the locked state even if you keep touching the tuning part.A low noise dual gate MOS FET is used for the high frequency stage.In combination with a wide-gap precision frequency linear type quadruple variable capacitor, sensitivity and interference removal ability are improved.The FM IF section uses a differential amplifier circuit with three ICs, including a Darlington differential IC, to obtain sufficient amplification and limiter characteristics.By adopting a newly developed linear phase ceremic filter and a Darlington differential IC, the group delay characteristics become flat regardless of the level fluctuation of the input radio wave, and various characteristics are improved.In order to prevent the pilot signal that distributes FM stereo broadcasts into L and R from harming the music signal, a PLL MPX circuit with a built-in pilot canceller is used.The reception frequency of AM waves is also displayed digitally.In addition, a highly integrated monolithic IC dedicated to AM achieves high sensitivity and high stability, and the AM IF section has a built-in LC block filter with good selectivity characteristics, ensuring excellent reception regardless of signal strength. Masu.The audio section employs a DC amplifier configuration that reflects a wide range philosophy.After thoroughly comparing TIM distortion and frequency characteristics, we expanded the power supply impedance from low to ultra-high range to achieve powerful and well-balanced sound quality.An error amplification type constant voltage power supply circuit is used to provide a stable power supply to each circuit.In addition, in order to prevent the power supply from having an adverse effect on sound quality, we have lowered the impedance, achieving high separation up to the ultra-high range, and improving accurate sound image localization and sound granularity.In order to cut the inter-station noise peculiar to FM broadcasting, an FM muting circuit is used to sharply cut the harsh inter-station noise and ensure quality.Equipped with a noise canceller switch, output level adjustable terminal, FM 300?/75? coaxial antenna terminal, and highly sensitive flexible AM ??bar antenna.?Main specificationsModel FM/AM tunerPractical sensitivity (IHF) mono:9.6dBfstereo:16.5dBf50dB Quitting Sensitivity (IHF) mono:13.5dBfstereo:35.5dBfSN ratio mono:81dB or morestereo:78dB or moreDistortion rate (IHF, 65dBf, stereo) 100Hz: 0.1% or less1kHz: 0.07% or less6kHz: 0.1% or lessCapture ratio (IHF) 1.0dB or lessSelectivity (IHF) 60dB or more (400kHz)Spurious response ratio (IHF) 85dB or more (83MHz)Image response ratio (IHF) 80dB or more (83MHz)IF response ratio (IHF, balanced) 90dB or more (83MHz)RF intermodulation (IHF) 65dB(83MHz)AM suppression ratio (IHF) 60dB or moreStereo separation (1kHz) 50dB or morePractical sensitivity (IHF, bar antenna) 47dB/m (220?V/m)Selectivity (±9kHz) 33dB or moreSN ratio 50dB or moreDistortion rate (30% modulation, 80dB/m) 0.35% or lessImage response ratio (IHF) 50dB or more (1000kHz)IF response ratio 35dB or more (1000kHz)Variable output voltage/impedance 0 to 775mV/2.5k?Rated power consumption (Electrical Appliance and Material Control Law) 20WExternal dimensions Width 430x Height 168x Depth 405mmWith rack mount adapter: Width 482x Depth 419mmWeight 8.8kgWith rack mount adapter: 9.3kg?The condition of the product is that it has been confirmed to work. Since this is an old item, it will be sold as a junk item.Everything you see in the photo will be included.?Condition?The memory seems to be slightly shifted to the left, but there is no problem in using it.?Please check if there are broadcast stations with frequencies of 76 to 108 MHz (FM) and 530 to 1605 kHz (AM) in your area.For remote delivery areas, additional fees will be charged. Import duties,taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility. These charges are normally collected by the delivering freight(shipping) company or when you pick the item up. -do not confuse them for additional shipping charges. We do not mark merchandise values below value or mark items as gifts. -US and International government regulations prohibit such behavior.
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