EM 50

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EM 50 is an F.M. Transmitter (87,5 ~108 MHz) externally synthesized with a step of 10KHz, microprocessor controlled and with LCD display for the visualization of transmission parameters: Forward and Reflected Power, Deviation level, etc. It includes fold back protection, Mono/Stereo audio (MPX) inputs, 3 SCA inputs and telemetry output. User can adjust output power from 0 to 50W. The EM 50 can be supplied with an internal digital stereo generator board (60dB separation).

technical features
operating frequency range 87.5 ~ 108.0MHz
modulation FM CLASS F3E, F8E (? 75KHz maximum deviation)
VCO tuning 25MHz
frequency stability ± 2.0ppm
frequency tuning step 10KHz
RF power output 0 ~ 50Wrms adjustable
spurious < - 80dBc
harmonics < - 70dBc
STEREO CHANNEL SEPARATION > 55dB / 1KHz
T.H.D. distortion < 0.1 % / 1KHz (0.08% typical)
BaseBAND FREQUENCY RESPONSE 0.15dB from 30Hz to 60KHz
unweighted S/N ratio > 78dB from 30Hz to 15KHz (Mono input, Pre-emphasis of 50ms)
asynchronous AM S/N ratio > 65dB Ref. 100 % AM / 400Hz
synchronous AM S/N ratio > 60dB with FM / 75KHz / 400Hz
Pre-EMphasis 50 or 75ms internally selectable
RF output impedance 50W asymmetrical. N Female Connector
MPX input connector (main program) BNC Female
stereo input impedance (main program) High-Z 2KW
SCA input connectors BNC Female
SCA input impedance High-Z 2KW
Remote control interface Serial RS232
cooling Forced air (Axial blower)
operating temperature range - 10º ~ + 45ºC
maximum relative humidity 90% (non condensed)
AC power supply 110 ~ 240VAC, 47/63Hz
Dimensions 2RU (19" rack), 410mm depth
weight 11.023lbs (5Kg)