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EM 50 F.M. Transmitter
EM50
An F.M. Transmitter (87,5 ~108 MHz) externally synthesised with a step of 10 Khz, microprocessor controlled and with LCD display for the visualisation of transmission parameters:
It includes:
Forward and Reflected Power
Deviation level, etc.
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 (60 dB separation).
Technical

operating frequency range

87.5 ~ 108.0MHz

modulation

FM CLASS F3E, F8E (? 75 KHz maximum deviation)

VCO tuning  

25 MHz

frequency stability

± 2.0ppm

frequency tuning step

10 KHz

RF power output

0 ~ 50Wrms adjustable

spurious

< - 80dBc 

harmonics

< - 70dBc

STEREO CHANNEL SEPARATION

> 55dB / 1 KHz

T.H.D. distortion

< 0.1 % / 1 KHz (0.08% typical)

Base BAND FREQUENCY RESPONSE

0.15dB  from 30 Hz to 60KHz

Unweighted S/N ratio 

> 78dB from 30 Hz to 15 KHz (Mono input, Pre-emphasis of 50 ms)

asynchronous AM S/N ratio 

> 65dB Ref. 100 % AM / 400 Hz

synchronous AM S/N ratio

> 60dB with FM / 75 KHz / 400 Hz

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 2 kW

SCA input connectors

BNC Female

SCA input impedance

High-Z 2 kW

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 ~  240 VAC, 47/63 Hz

Dimensions

2 RU (19" rack), 410 mm depth

weight

11.023lbs (5 Kg)

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