REFURBISHED DX 50
General
Type Of Modulation: Harris patented AM Digital Amplitude Modulation.
Transmitter Type: Medium wave, 100% solid state.
Power Output Range: DX 25U: 10-27.5 kW. DX 50: 10-60 kW. Transmitter capable of combined operation.Three adjustable pre-set power levels are provided.
Frequency Range: 531 kHz – 1705 kHz. Supplied, tuned and tested to one frequency as specified.
AC Mains Input: Any voltage between 363 and 502 VAC, 3 phase, 50/60 Hz, 3 wire plus 190 to 260 VAC single phase, 1 kVa, 50/60 Hz. Optional 480/240 VAC stepdown transformer available.
Power Supply Variation: ±5% voltage, 48-63 Hz.
Transient Protection: Meets ANSI/IEEE C62.41-1980 requirements; includes high-capability MOVs.
Power Factor: 0.98% typical.
Frequency Stability: ±10 Hz, 0 to 50°C, ±2 Hz at typical conditions.
Audio Input: -10 to +10 dBm, adjustable transformerless input; 600, 150, and 50 ohm terminators provided.
RF Output: 31 /8 ” EIA flange; accepts male or female connectors.
RF Load: 50 ohms, unbalanced. Front panel matching range of 1.2:1 VSWR at carrier.
Cabinet & Harmonic/Spurious Radiation: Meets FCC, CCIR and IC requirements.
Overall AC Efficiency: Typically 83% at 25 kW and 50 kW.
Audio Performance
Audio Frequency Response: +0.2/-0.8 dB, 20 Hz to 10 kHz. Reference 1 kHz at 95% modulation.
Total Harmonic Distortion: DX 25U: 0.9% or less at 95% modulation, 30 Hz to 10 kHz, at 25 kW; 0.5% typical. DX 50: 0.7% or less at 95% modulation, 30 Hz to 10 kHz, at 50 kW, 0.3% typical.
Intermodulation Distortion: DX 25U: 0.8% or less, 1:1, 60/7000 Hz; 1.3% or less 4:1, 60/7000 Hz; SMPTE at 95% modulation. No audio filters required. DX 50: 0.8% or less, 1:1, 60/7000 Hz; 1.3% or less 4:1, 60/7000
Hz; SMPTE at 95% modulation. Typical 0.4% 1:1, 0.8% 4.1. No audio filters required.
Transient Intermodulation Distortion: 0.5% or less at 95% modulation,
2.96/8.0 kHz, 4;1. No audio filters required.
Squarewave Overshoot: 0.3% or less at 400 Hz, 85% modulation. Mea-
sured peak to peak. No audio filters required.
Type Of Modulation: Harris patented AM Digital Amplitude Modulation.
Transmitter Type: Medium wave, 100% solid state.
Power Output Range: DX 25U: 10-27.5 kW. DX 50: 10-60 kW. Transmitter capable of combined operation.Three adjustable pre-set power levels are provided.
Frequency Range: 531 kHz – 1705 kHz. Supplied, tuned and tested to one frequency as specified.
AC Mains Input: Any voltage between 363 and 502 VAC, 3 phase, 50/60 Hz, 3 wire plus 190 to 260 VAC single phase, 1 kVa, 50/60 Hz. Optional 480/240 VAC stepdown transformer available.
Power Supply Variation: ±5% voltage, 48-63 Hz.
Transient Protection: Meets ANSI/IEEE C62.41-1980 requirements; includes high-capability MOVs.
Power Factor: 0.98% typical.
Frequency Stability: ±10 Hz, 0 to 50°C, ±2 Hz at typical conditions.
Audio Input: -10 to +10 dBm, adjustable transformerless input; 600, 150, and 50 ohm terminators provided.
RF Output: 31 /8 ” EIA flange; accepts male or female connectors.
RF Load: 50 ohms, unbalanced. Front panel matching range of 1.2:1 VSWR at carrier.
Cabinet & Harmonic/Spurious Radiation: Meets FCC, CCIR and IC requirements.
Overall AC Efficiency: Typically 83% at 25 kW and 50 kW.
Audio Performance
Audio Frequency Response: +0.2/-0.8 dB, 20 Hz to 10 kHz. Reference 1 kHz at 95% modulation.
Total Harmonic Distortion: DX 25U: 0.9% or less at 95% modulation, 30 Hz to 10 kHz, at 25 kW; 0.5% typical. DX 50: 0.7% or less at 95% modulation, 30 Hz to 10 kHz, at 50 kW, 0.3% typical.
Intermodulation Distortion: DX 25U: 0.8% or less, 1:1, 60/7000 Hz; 1.3% or less 4:1, 60/7000 Hz; SMPTE at 95% modulation. No audio filters required. DX 50: 0.8% or less, 1:1, 60/7000 Hz; 1.3% or less 4:1, 60/7000
Hz; SMPTE at 95% modulation. Typical 0.4% 1:1, 0.8% 4.1. No audio filters required.
Transient Intermodulation Distortion: 0.5% or less at 95% modulation,
2.96/8.0 kHz, 4;1. No audio filters required.
Squarewave Overshoot: 0.3% or less at 400 Hz, 85% modulation. Mea-
sured peak to peak. No audio filters required.
