Sony ST-JX310
Quartz Synthesis AM/FM Tuner
Sony's Lowest-Price Quartz Synthesis Tuner
Quartz frequency synthesis
5 AM/ 5 FM memory presets
Microprocessor-controlled tuning
Interstation muting switch
Key Selling Feature - Quartz frequency Synthesis
Of all the tuning systems available today, none is more convenient, none more precise, none offers greater freedom from drift and distortion than the system used in the ST-JX310 - Quartz frequency synthesis. Radio stations use a quartz crystal to maintain their location on the dial. in the same way, the ST-JX310 uses quartz to tune stations in with the utmost precision. it's easy, straightforward, and accurate every time.
Key Demonstration
Explain that the tuner uses a microprocessor to synthesize each station frequency, and uses quartz precision to lock onto that frequency. There is no drift or fade, Demonstrate operation by asking the customer for his or her favourite station. Tune the station manually, then enter it into one of the tuner's memory presets. Tune in another station, then retrieve the station just preset. Point out that, once memorized, any station can be recalled at any time with a touch of a button.
Convenience Features
Microprocessor tuning with manual "step" tuning up and down the dial
Five AM and five FM station memory presets for instant recail at the touch of a button
Liquid crystal display includes preset number, station frequency, tuned status, muting status
Switchable muting between FM stations eliminates raucous inter-station noise.
Stereo indicator
Technology Features
Quartz frequency synthesis for the most precise , most convenient tuning available at any price
Superior FM s/n of 82 dB in mono, 77 dB in stereo
Lithium batteries maintain preset station memory
Detachable AM ferrite bar antenna can be located for optimum reception
specifications
FM Station
Useable Sensitivity (Mono): 10,3 dBf (1,8 µV )
50 dB Quieting Sensitivity
Mono: 16,1 dBf (3,5 µV )
Stereo : 38,3 dBf (45 µV )
Signal-to-Noise-Ratio:
Mono : 82 dB
Stereo : 77 dB
Total harmonic Distortion: at 1 kHz
Mono : 0,15%
Stereo : 0,3%
Frequency Response: 30 Hz - 15,000 Hz +0,5 dB -2,0 dB
Stereo Separation: 45 dB at 1 kHz
Alternate Channel Selectivity (400 Hz): 65 dB
Capture Ratio: 1,0 dB
AM Suppression: 54 dB
Image Rejection: 50 dB
Spurious Response: 70 dB
IF Response: 90 dB
RF Intermodulation (IHF): 60 dB
Muting/Tuning Threshold: 25 dBf
AM Section
Quieting Sensitivity: Detachable antenna : 50 µV/m
Signal-to-Noise-Ratio: 54 dB at 50 mV/m
Total harmonic Distortion: 0,3% at 50 mV/m, 400 Hz
Selectivity (10 kHz): 38 dB
Image Rejection: 45 dB
General
Output Level: 550 mV
Output Impedance: 3,3 k Ω
Power Requirements: AC 120 Volts, 50 Hz
Power Consumption: 8 Watts
Dimensions (W x H x D): 430 x 55 x 285 mm (17" x 2-1/4" x 11-1/8")
Weight (net): 2,8 kg (6 lb 3 oz)