Chronomatic-274 (120-1582) Specifications Faxback Doc. # 3803 Bands AM:.......................................................530-1710 kHz FM:.........................................................88-108 MHz Power:.........................................120V AC, 60 Hz, 8 Watts DC 9V Intermediate Frequency AM:............................................................455 KHz FM:...........................................................10.7 MHz Power Output:.........................................300 mW (Maximum) Speaker:.......................................3 Inch (7.6 cm) Ferrite Dynamic-Type, 8 ohms Dimensions:..............................2.6 x 6.2 x 10.2 Inches (HWD) Weight:..........................................................2 LB. Testing Conditions: Supply Voltage/Rated Voltage:.............................120V 60Hz AC Output Load:.....................................................8 Ohm Reference Output:.................................................50mW Room Temperature:.........................................25 degrees C AM BAND Standard Modulation:........................................400 Hz 30% UNIT NOMINAL LIMIT Intermediate Frequency: kHz 455 +/-5 Frequency Range: kHz 510-1750 520-1720 Maximum Sensitivity to produce: 50 mW output at 600 kHz microV/m 501 794 1000 kHz microV/m 501 794 1400 kHz microV/m 501 794 Quieting Sensitivity at S/N 20dB: at 600 kHz microV/m 794 1259 1000 kHz microV/m 794 1259 1400 kHz microV/m 794 1259 Dial Calibration: at 540 kHz kHz +/-25 +/-30 1000 kHz kHz +/-50 +/-70 1700 kHz kHz +/-50 +/-70 S/N Ratio at 5 mV/m input at 1000 kHz dB 33 30 Image Rejection at 1400 kHz dB 32 28 IF Rejection at 600 kHz dB 50 40 AGC Figure of Merit (From 1000mV/m dB 45 40 input at 1000 kHz, till output drops by 10 dB) ACA at Maximum Sensitivity at 1000 kHz dB 17 15 (+/- 10 kHz) Bandwidth at 6 dB down, kHz 9.5 11 at Input 1000 kHz Output Power Maximum/10% THD 1000 kHz mW 350/320 320/300 Distortion at 1000 kHz % 3 4 Overload 80% Modulation, at 100 mV/m % 5 7 Whistle Modulation at 1/10/100 mV/m 2nd IF % 8 10 Whistle Modulation at 1/10/100 mV/m Input 3rd IF % 8 10 Audio Fidelity 6 dB down 5 mV/m Input at 1000 kHz, 400 Hz=0 dB Hz 60-2200 200-2000 Min. Volume Hum and Noise mV 3 5 Oscillator Drop-out Noise V 95 100 Hum Modulation at 100 mV/m dB 42 38 Note: The standard output level is 50mW at 8 ohm (resistive load). Input level is 5mV/m 400 Hz 30% Modulation. FM BAND Signal Generator Impedance: 75 ohm Disconnect the Telescoping Rod Antenna Cables. The Signal Voltage in this specification or test data is the voltage appearing across the tuner input terminal. Modulation:...................................400 Hz 22.5 kHz deviation UNIT NOMINAL Limit Intermediate Frequency MHz 10.7 +/-0.3 Frequency Range* MHz 87-109 +/-0.5 +/-0.5 Quieting Sensitivity at S/N 30dB at 90 MHz microV 20 35 98 MHz microV 20 35 106 MHz microV 20 35 Dial Calibration: at 88 MHz kHz +/-1000 +/-1200 100 MHz KHz +/-1000 +/-1200 108 MHz kHz +/-1000 +/-1200 Power 10% THD mW 350 300 S/N Ratio 1 mV Input at 98 MHz dB 45 40 Distortion in 50 mW Output % 2 3 at 98 MHz 1 mV AM Suppression at 1 mV Input dB 32 26 -3 dB Limiting Sensitivity microV 25 50 at 98 MHz AFC Holding Range kHz 500 700 Image Rejection at 106 MHz dB 22 20 IF Rejection at 90 MHz dB 60 55 Spurious Response at 2 x 98 MHz+ dB 45 42 1/2 IF)=206.7 MHz Capture Ratio at 98 MHz IHF Method dB 8 10 De-emphasis at 6 kHz 400 Hz=0 dB, 1 mV Input at 98 MHz dB -9 +/-3 Min. Volume Hum and Noise mV 3 5 Tuning Shift 1 mV - 100 mV kHz 100 150 Oscillator Drop-out Voltage V 95 100 Hum Modulation at 1 mV dB 36 36 ACS at 98 MHz 100 microV dB 18 15 Input +/-400 kHz *European model must not be able to tune below 87.5 MHz. Note: With volume control in maximum position, connect signal generator to telescopic antenna input terminal (through suitable impedance matching network). Standard output level is 50 mW at 8 Ohm (resistive load). CLOCK UNIT NOMINAL LIMIT Power Failure Keeping Time Sec 1.3 1 Alarm Sound Frequency Hz 900 +/-10% Current Drain Stand-by microA 8 15 Battery Check mA 10 +/-25% Low Battery Voltage Indicator V 8.1 +/-0.3 Current Drain Back-up Without Alarm mA 5 10 Back-up With Alarm mA 30 70 Clock Oscillator Frequency Hz 900 +/-10% at 9 Volts Minimum Operating Voltage Without Alarm V 7.0 7.2 With Alarm V 7.0 7.2 Alarm Sound Level at 5 cm Vertically: above Speaker AC Voltage dBA 78 72 DC Voltage dBA 76 70 Note: Nominal Specs represent the design specs. All units should be able to approximate these-some will exceed and some may drop slightly below these specs. Limit specs represent the absolute worst condition that still might be considered acceptable; in no case should a unit fail to meet limit specifications. (LB/all-02/06/95)