Nautel J1000

The J1000 transmitter provides excellent functionality and flexibility for the broadcaster. The advanced PDM modulation correction and automatically adjusted power supply operation voltages yield low distortion figures from 10 watts to 1100 watts. Direct digital synthesis technology ensures a pure and stable RF carrier frequency that can be interfaced to a GPS reference.

The transmitter features a simple bandpass RF filter network with ferrite-tuned inductors and a frequency synthesizer with dialup frequency selection, allowing quick tuning to a new carrier frequency. With its compact size and ease of frequency change, the J1000 is an ideal solution for a mobile back up transmitter.

  • Redundant Architecture
  • Excellent Sound Quality
  • Built-in Scheduler
  • Single Phase Power
  • Simple Frequency Change
  • Plug and Play
  • Compact and Lightweight
  • Convenience Operation
GENERAL Transmitter Type: Medium wave, 100% solid state Configuration: Two 500 W RF power modules each including eight broadband RF amplifiers and four modulators RF Output Power: Rated: 1,000 W Range: 10 W to 1,100 W Six preset levels, selected locally or remotely RF Output Connection: Type N RF Output Impedance: 50 ohms, unbalanced Efficiency: 75% Frequency Range: 531 kHz to 1,690 kHz (supplied to one frequency as ordered) Frequency Stability Internal: ±2 ppm over temperature range Frequency Stability External: GPS 10 MHz dependent on external source Modulation Capability: 125% positive peak modulation at rated power Incidental Quadrature Modulation 36 dB below 95% modulation at 1,000 Hz Spurious and Harmonic: Meets or exceeds FCC, IC, and ITU requirements AC INPUT Voltage: 170 - 270 V ac, 1 phase, 50 Hz or 60 Hz Power Consumption:  1,430 W maximum at 1 kW, 0% modulation 2,140 W maximum at 1 kW, 100% modulation ENVIRONMENTAL Temperature Range:  0°C to +50°C Derate 3°C per 500 m above sea level (2°C per 1,000 ft) Humidity Range: 0% to 95% non-condensing Altitude: 0 m to 4,000 m (0 ft to 13,000 ft) PHYSICAL Dimensions: 58 cm H x 48 cm W x 51 cm D (23" H x 19" W x 20" D) Weight: 23 kg (50 lbs) A U D I O PERFORMANCE Frequency Response: +0.2 dB/-0.8 dB, 30 Hz to 10,000 Hz. Total Harmonic Distortion: Better than 0.8% (THD), 30 Hz to 10,000 Hz at 95% modulation. Referenced at 1,000 W. Better than 1.2% (THD), 30 Hz to 10,000 Hz at 95% modulation. Referenced at 100 W. Reduced antenna bandwidth may specification. Carrier Shift: 0.5% or less Hum and Noise: 65 dB or more below 100% modulation D I G I T A L COMPATIBILITY Frequency Response: +0.2 dB/-1.5 dB, 30 Hz to 15,000 Hz. Referenced at 1 kHz Total Harmonic Distortion: Better than 1% (THD), 30 Hz to 15,000 Hz at 95% modulation. Referenced at 1 kHz Incidental Quadrature Modulation: 35 dB or better (typical), 30 Hz to 15,000 Hz Notes: Specifications established at rated power unless otherwise noted. All measurements at 50 ohms resistive load; AC input voltage at nominal level.

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