2KW FM Transmitter, EM 2000 HE DIG PLUS OMB

2KW FM Transmitter, EM 2000 HE DIG PLUS OMB - FM Zenders View larger

: OMB

: EM 2000 HE D

: New

: FM Transmitters

: 2KW FM Transmitter, EM 2000 HE DIG PLUS OMB

The 2KW FM transmitter, EM 2000 HE DIG PLUS, has been created by the OMB center of development for high efficiency transmitters. It consists on the high efficiency 2KW amplifier, FMA 2000 HE, with >73% efficiency and the EM 25 DIG PLUS, a 25W FM transmitter. The high efficiency 2KW amplifier has an approximate consumption of 2600VA at 230Vac, so it pays for itself in a short period of time due to its low consumption. This 2KW FM transmitter is also available in Dual Drive version

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€ 11.294,99

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Product information
 
Product Discription:

MAIN FEATURES OF THE 2KW FM DIGITAL TRANSMITTER MANUFACTURED BY OMB:
 

  • Typical AC efficiency >73% and typical RF efficiency of 84%.
  • Two amplifying modules of 1000W with MOSFET technology.
  • Two independent switching power supplies connected in parallel to maintain the equipment working in case any of them fails.
  • TFT screen and touch keyboard to control and to visualize operation parameters.
  • Memory recording of events.
  • Speed control of cooling fans according to temperature of power modules so as to optimize consumption and to decrease acoustic contamination.
  • Advanced protection against load mismatches without transmission cuts and fast protection in case of excessive reflected power and/or excessive input power.
  • Analog telemetry, digital remote control and telemetry RS232, remote control by opened/closed contacts
  • Low pass filter, Mains EMI filter and internal single-phase transient suppressor.
  • Automatic power reduction at night when used in combination with the EM 25 DIG PLUS transmitter.
  • 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 excessive reflected power.
  • Automatic voltage control for efficiency optimization.
  • Power supplies of the amplifier are hot removable and interchangeable.
  • Automatic voltage control for efficiency optimization
     
GENERAL CHARACTERISTICS

CHARACTERISTICS AMPLIFIER FMA 2000 HE HPPS

FREQUENCY RANGE87.5-108MHz
INPUT RETURN LOSS-20dB
INPUT POWER<15W
OUTPUT POWER2000W nominal, manual and automatic adjustable
POWER GAIN19.2dB minimum
TOTAL EFFICIENCY>73% typical
RF EFFICIENCY84% typical
COOLINGForced air, speed control of fans
HARMONICS LEVEL-80dBc
INPUT/OUTPUT IMPEDANCE50Ω
RF INPUT CONNECTORN(F)
RF OUTPUT CONNECTOR7/16"or EIA 7/8"
RF MONITOR CONNECTORBNC(F)
POWER SUPPLY230VAC ±15% → 195 ÷ 265VAC, 50/60Hz
CONSUMPTION2600VA (@2000W output power)
PROTECTIONSReflected 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. Exciter’s inhibition
TELEMETRY AND REMOTE CONTROLAnalog telemetry (direct and reflected power measurements). Digital telemetry and remote control RS232. Remote control by opened/closed contacts
OPERATION TEMPERATURE-5 to +40°C
WEIGHT20Kg approx. (without rack)
DIMENSIONS3 standard rack

 

EXCITER EM 25 DIG PLUS
FREQUENCY RANGE87.5-108MHz
FM MODULATION75KHz (adjustable) peak deviation. Mono 180kF3E and Stereo 256kF3E
AUDIO/MPX INPUT LEVEL-3.5 @ +12.5dBm @ 75KHz deviation
AUDIO INPUT CONNECTORSXLR(F)
AUXILIARY CHANNEL (RDS/SCA) INPUT LEVEL7.5KHz deviation: -12.5 to 3.5dBm and 2KHz deviation: -24 to -8dBm
AUX. CHANNEL INPUT IMPEDANCE10kOhm
MODULATION DISTORTION7.5Khz deviation: <0.05%, 0.02% typical; 2KHz deviation: <0.2%, 0.05% typical
S/N MONO RATIO30 to 20000Hz: >76dB, 86dB typical, CCIR: >75dB, 81dB typical

 

Technical specifications:

 

S/N STEREO RATIO30 to 20000Hz: >72dB, 77dB typical, CCIR: >68dB, 72dB typical
AUDIO CHANNELS BANDWIDTH30 to 15000Hz ±0.1dB
PRE-EMPHASIS TIME CONSTANTSelectable, 25/50/75 microseconds
RF NOMINAL OUTPUT POWER25W
TUNING STEPS OF TRANSMITTER10/100KHz
ALC OUTPUT POWER STABILITY±3%
SPURIOUS AND HARMONIC EMISSIONS<80dBc
RF OUTPUT IMPEDANCE50Ω
RF INPUT POWER CONNECTORN
RF SAMPLING CONNECTORBNC
POWER SUPPLY110-230Vac ±15% 50-60Hz
OPERATION TEMPERATURE RANGE0 to 40°C recommended, -10 to 55°C max.
RELATIVE HUMIDITYUp to 95% without condensation
DIMENSIONS484x300x90mm, 2 standard rack units of 19"
WEIGHT7Kg