Medium Wave FIDELITY line
The RIZ FIDELITY is the newest line of RIZ's MW digital totally solid state transmitters in the power range 5 kW up to 2000 kW.
Transmitters are capable for standard amplitude AM, digital DRM or SIMULCAST modes of operation. The operating mode is changed by pressing a button on the touch screen main menu.
The DRM Exciter / Modulator is integrated in the transmitter.
Multifunctional touch screen menu enables controlling of the transmitter and monitoring of all relevant parameters.
Power amplifiers are designed as plug-in hot swappable broadband units, without needs for tuning over the entire MW band, with integrated supervision and protection circuits.
The new approach in mechanical design and the out-phasing modulation principle makes the RIZ FIDELITY transmitters smaller, more compact and more efficient than older generation MW transmitters.
RIZ's FIDELITY LINE transmitters are designed in accordance with IEC standards and ITU recommendations for this type of service.
MAIN FEATURES:
- More than 90 % overall efficiency (typically 92%)
- AM, AM / CCM, DRM, Simulcast operating modes
- DRM Exciter / Modulator integrated in the transmitter
- Tunable over the entire MW band
- FM-like audio performance
- Modular design
- Large Touch Screen Display
- User friendly control and monitoring
- Remote control for unattended operation
Description | Fidelity 10 |
Fidelity 25 |
Fidelity 50 |
Fidelity 100 |
Fidelity 200 |
Fidelity 300 |
Fidelity 400 |
General | |||||||
Output Power (AM mode) | 10 kW with 135% positive peak modulation |
25 kW with 135% positive peak modulation |
50 kW with 135% positive peak modulation |
100 kW with 135% positive peak modulation |
200 kW with 135% positive peak modulation |
300 kW with 135% positive peak modulation |
400 kW with 135% positive peak modulation |
Output Power (DRM mode) | 6 kW | 15 kW | 30 kW | 60 kW | 120 kW | 180 kW | 240 kW |
Frequency Range | 525 – 1605kHz | ||||||
Frequency Stability | ±2 x 10-7 | ||||||
AC Mains Input |
400 VAC ±10% 3 Phase, 50 Hz 4 Wire |
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Power Supply Variation |
-10% to +10% voltage 50 Hz |
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Power Consumption | 22 kVA | 45 kVA | 90 kVA | 175 kVA | 350 kVA | 525 kVA | 700 kVA |
Transient Protection | Meets IEC 587 requirements. |
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Power Factor |
> 0.9 | ||||||
Audio Input Impedance |
balanced input without transformer (>20 kOhm or 600 Ohm internally jumper selectable) |
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Audio Input Level |
-10 to +10 dBm, adjustable in 0.5 dB steps |
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Mode of operation | AM, AM with CCM, DRM, Simulcast | ||||||
Overall Efficiency | ≥ 85% | ≥ 85%, typical 90% | ≥ 88%, typical 90% | ≥ 90%, typical 92% | ≥ 90%, typical 92% | ≥ 90%, typical 92% | ≥ 90%, typical 92% |
RF Output | |||||||
RF Load Impedance | 50 Ohm, unbalanced | 50 Ohm unbalanced, 60 or 120 Ohm as option | |||||
Permissible VSWR | Less than 1.5 | ||||||
Cabinet & Harmonics | Meets CCIR requirements. |
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Spurious Radiation | Meets CCIR requirements. |
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Audio Performance | |||||||
Audio Frequency Response | ±1 dB, 30 Hz to 10 kHz. |
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Total Harmonic Distortion |
0,8% or less at 95% modulation, 30 Hz to 10 kHz |
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Carrier Shift |
Less than 1%. | ||||||
Hum And Noise |
-65 dB or better below 100 % modulation (unweighted). -70dB (Measured with IEC – A weighted filter) |
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Environment Conditions | |||||||
Ambient Temperature | 0° C to + 45° C |
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Altitude | Up to 3000 meters. | ||||||
Humidity Range | 0 to 95%, non- condensing. |