EM 700

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The EM 700 is a 700W FM transmitter made up of the EM 20/30 exciter and the AM 700 FM amplifier. This equipment includes a high-efficiency amplifier, LPF (Low Pass Filter) and cyclical protections of: SWR, overdrive, over-consumption, over-power and temperature. The output power is externally adjustable between 0 and 700W.The EM 700 also incorporates a switching power supply that allows stable output power with input voltage from 90 to 260VAC.


technical features:


AM 700

frequency range 87.5 ~ 108MHz
operating class B
input return loss 20dB
input power 10 ~ 12W
OUTPUT POWER 700W nominal
power gain 19.2dB typical
efficency 70% approx.
cooling Air forced
harmonic <-70dBc
input/output impedance 50Ω
RF input connector N Female
RF output Connector N Female
RF monitor Connector BNC Female
AC power supply 90 ~ 260VAC, 50/60 Hz, <1000VA
Protections Reflected power (10% nominal power), over-consumption, temperature, power supply failure, overdrive, direct and reflected foldback.
remote control and TElemetry RS-232, exciter inhibition
Dimensions 3RU (19'' rack) 465mm depth (without handles)
weight 16Kg (35.2Lbs)


EM 20/30

frequency range 87.5 ~ 108.0MHz
ModulaTIOn Frequency ( ±75KHz deviation)
modulation CLASS F3E, F8E
VCO tuning range 25MHz
frequency stability ±2.0ppm
ferquency tuning step 10KHz
RF output power 0 ~ 30Wrms adj.
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; 50ms pre-emphasis
asynchronous AM S/N ratio >65dB (ref.100% 400Hz)
synchronous AM S/N ratio >60dB (75 KHz dev. and 400Hz)
Pre-enphasis 50 or 75ms internally selectable
RF output impedance 50W asymmetrical (N Female Connector)
audio/stereo input connector BNC Female
audio/stereo input impedance High-Z. 2KW
SCA channel input connectors BNC Female
SCA channel input impedance High- Z. 2KW
remote control interface serial RS-232
cooling Air forced (axial blower)
operating temperature range - 10 ~ + 45ºC
maximum relativa humidity 90% (without condensation)
AC power supply 110 ~ 240VAC, 47/63Hz
Dimensions 2RU (19" rack) 410mm depth
weight 4.8 Kg (10.56lbs)


EM 700: AMPLIFIER + EXCITER

CONSUMPTION 1184VA
DIMENSIONS 430 x 540 x 540mm
weight 49 Kg (108lbs)