3KW FM Zender, EM 3000 HE DIG PLUS OMB
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Product information
The 3KW FM transmitter, EM 3000 HE DIG PLUS, has been created by the OMB center of development for high efficiency transmitters. It consists on the high efficiency 3KW Amplifier, FMA 3000 HE, with 72% efficiency and the EM 25 DIG PLUS, a 25W FM transmitter. The high efficiency 3-3.5KW amplifier has an approximate consumption of 4200VA at 230Vac, so it pays for itself in a short period of time due to its low consumption. This 3KW FM transmitter is also available in Dual Drive version
EM 3000 HE DIG
Product Discription:
MAIN FEATURES OF THE 3KW FM DIGITAL TRANSMITTER MANUFACTURED BY OMB:
- AC Efficiency: 72% (typical value). RF Efficiency RF: 84% (typical value)
- 4 amplifying modules of 900W with MOSFET technology
- 3 independent switching power supplies connected in parallel so if there is a failure in any of them the equipment maintains its operation
- TFT screen and touch keyboard for the control and visualization of operational parameters.
- Memory registration of events
- Control of the speed of cooling fans depending on the temperature at the power modules for optimizing power consumption and decreasing acoustic contamination
- Advanced protection against load mismatches without interrupting the transmission and ultra-fast protection in case of excessive reflected power and input power
- Analog telemetry, digital RS232 remote control and telemetry, remote control by opened/closed contacts.
- Low pass filter, EMI filters and internal single-phase transient suppressor
- Automatic power reduction at night if the amplifier is combined with the EM 25 DIG PLUS
- Automatic power reduction in case of high temperature, the equipment returns automatically to its rated power value when the temperature reaches back an average value
- Automatic power reduction in case of failure of one of the power supplies and in case of excessive reflected power.
- Automatic voltage control for efficiency optimization
| AMPLIFIER FMA 3000 HE | |
| FREQUENCY RANGE | 87.5-108MHz |
| INPUT RETURN LOSS | -20dB |
| INPUT POWER | <25W |
| OUTPUT POWER | 3-3.5KW nominal, manual and automatic adjustable |
| POWER GAIN | >21.3dB minimum |
| TOTAL EFFICIENCY | >73% typical |
| RF EFFICIENCY | 84% typical |
| COOLING | Forced air, speed control of fans |
| HARMONICS LEVEL | -82dBc |
| INPUT/OUTPUT IMPEDANCE | 50Ω |
| RF INPUT connector | N(F) |
| RF OUTPUT CONNECTOR | 7/16"or EIA 7/8" (under request) |
| RF MONITOR CONNECTOR | bnc(F) |
| POWER SUPPLY | 230VAC ±15% → 195 ÷ 265VAC, 50/60Hz |
| CONSUMPTION | 4200VA (@3000W output power) |
| PROTECTIONS | Reflected power, forward power, overdrive, and overcurrent in power modules. Smart temperature protection. Ultra-fast protection against reflected and input power. Real time registration of events. Exciters inhibition |
| TELEMETRY AND REMOTE CONTROL | Analog telemetry (direct and reflected power measurements). Digital telemetry and remote control RS232. Remote control by opened/closed contacts |
| OPERATION TEMPERATURE | -5 to +40°C |
| WEIGHT | 45Kg approx. (without rack) |
| DIMENSIONS | 5 standar |
| EXCITER EM 25 DIG PLUS | |
| FREQUENCY RANGE | 87.5-108MHz |
| FM MODULATION | 75KHz (adjustable) peak deviation. Mono 180kF3E and Stereo 256kF3E |
| AUDIO/MPX INPUT LEVEL | -3.5 @ +12.5dBm @ 75KHz deviation |
| AUDIO INPUT CONNECTORS | xlr(F) |
| AUXILIARY CHANNEL (RDS/SCA) INPUT LEVEL | 7.5KHz deviation: -12.5 to 3.5dBm and 2KHz deviation: -24 to -8dBm |
| AUX. CHANNEL INPUT IMPEDANCE | 10kOhm |
| MODULATION DISTORTION | 7.5Khz deviation: <0.05%, 0.02% typical; 2KHz deviation: <0.2%, 0.05% typical |
| S/N MONO RATIO | 30 to 20000Hz: >76dB, 86dB typical, CCIR: >75dB, 81dB typical |
Technical specifications:
| S/N STEREO RATIO | 30 to 20000Hz: >72dB, 77dB typical, CCIR: >68dB, 72dB typical |
| AUDIO CHANNELS BANDWIDTH | 30 to 15000Hz ±0.1dB |
| PRE-EMPHASIS TIME CONSTANT | Selectable, 25/50/75 microseconds |
| RF NOMINAL OUTPUT POWER | 25W |
| TUNING STEPS OF TRANSMITTER | 10/100KHz |
| ALC OUTPUT POWER STABILITY | ±3% |
| SPURIOUS AND HARMONIC EMISSIONS | <80dBc |
| RF OUTPUT IMPEDANCE | 50Ω |
| RF INPUT POWER CONNECTOR | N |
| RF SAMPLING CONNECTOR | BNC |
| POWER SUPPLY | 110-230Vac ±15% 50-60Hz |
| OPERATION TEMPERATURE RANGE | 0 to 40°C recommended, -10 to 55°C max. |
| RELATIVE HUMIDITY | Up to 95% without condensation |
| DIMENSIONS | 484x300x90mm, 2 standard rack units of 19" |
| WEIGHT | 7Kg |
Levertijd:
5 - 10 werkdagen