OVERVIEW:
The all-in-one product includes digital demodulation, digital processing and modulation, RF power amplifier, power supply, all modules in a chassis, all signals both input and output from the rear panel.
The FM radio relay system includes receiving antenna, 2000W FM radio relay repeater, transmitting antenna, connecting cables and connectors. The FM signal can be received by the receiving antenna, the 2000W FM relay repeater will do demodulates, processes, modulates, RF amplifies, and the transmitting antenna can directly broadcast again , this system can meet the needs of various occasions.
Many users also call it as local: fm relay station, broadcast relay station, relay transmitter, complementary station, broadcast translator, repeater, re-broadcaster.
I already have a radio station, how to expand my fm transmitter coverage?
You can use the 2000W FM radio relay system to receive the FM signal of the main station and broadcast it again at the new station. The power of the relay broadcasting system transmitter is 2KW. And the source of the studio program is exactly the same as the main station.
MAIN FEATURE
- Adopt digital FM receiving and demodulating technology to ensure clear demodulation sound quality.
- Using FPGA+DDS technology to implement full digital FM modulation technology, so that the FM emission index reaches the top level.
- Using high reliability ARM architecture microprocessor technology as the main controller.
- Support input of wireless RF receiving audio, two AES/EBU digital audio signals, one analog stereo audio and one MPX stereo composite signal, etc.
- Support one way RDS or SCA input.
- AGC controls output power to ensure zero deviation of output power.
- Perfect over-current, over-voltage, over-temperature, over-power, standing wave ratio alarm and protection function.
- Using OLED to display working parameters in real time.
- Use high-gain directional FM receiving antenna to receive signals (even the signal is very weak ) and and re-broadcast .
- Re-broadcast power up to 2000W, with high gain dipole antenna, cover radius up to 50KM.
Schematic
Applications
- Customers who has a main radio station and want expand coverage.
- Make up coverage in mountainous areas.
- Limited budget to expand coverage of the radio station.
- 100KM or 200KM coverage , even for whole country coverage.
- 360 degree omnidirectional transmission studio program.
- There are obstacles between the studio and the main radio station.
TECHNICAL SPECIFICATIONS
- 2000W FM relay repeater transmitter
FM receiving frequency range | 76MHz ~ 108MHz, stepping 10kHz (can be customized other frequencies) |
FM transmission frequency range | 87MHz ~ 108MHz, stepping 10kHz (can be customized other frequencies) |
Carrier frequency deviation | ±200Hz |
Output Power | 0~2000W continuously adjustable (other power can be customized) |
Output power stability | <±3% (ambient temperature -10 °C to +45 °C) |
RF output impedance | 50Ω |
RF output connector | L27-50K (can be customized other connectors) |
In-band residual wave | < -85dBc |
Higher harmonic | < -80dBc |
Parasitic amplitude modulation | < -60dB |
Analog audio input impedance | 600Ω, balanced card |
Analog audio input level | -15dBm to +15dBm |
AES/EBU input impedance | 110Ω, balance card |
AES/EBU input level | -60dBFS to 0dBFS |
MPX input impedance | 10KΩ, unbalanced BNC |
MPX input level | -15dBm to +15dBm |
Audio level gain | -15dB~+15dB step 0.1dB |
RDS/SCA input | Unbalanced BNC |
Audio pre-emphasis | 0μs/25μs /50μs/75μs optional |
Stereo signal to noise ratio | ≥92dB, 1KHz, 100% modulation |
Total harmonic distortion | <0.02%, 30Hz~15000Hz |
Audio frequency response | ±0.01dB, no weighting, no weighting; ±0.05dB, weighting and weight removal |
Stereo resolution | ≥73dB, 30Hz~15000Hz |
Left and right channel level difference | <0.02dB (100% modulation) |
19KHz/MPX output impedance | 600Ω, unbalanced BNC |
19KHz/MPX output level | -15dBm to +15dBm |
Heat dissipation method | Forced convection |
voltage | AC90V~AC265V 47Hz~63Hz |
Operating temperature | -10 ° C ~ +45 ° C, no condensation |
Chassis size | 19 inches, 2U (500mm × 484mm × 88mm) |
Total Weight | 50kg |
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