OMB EM 20000 HE DIG

The OMB EM 20000 HE DIG 20KW FM transmitter has been created by the OMB center of development for high efficiency transmitters. It consists on the FMA 20000 HE power amplifier and the EM 250 DIG PLUS transmitter. This high efficiency 20KW amplifier is composed by four 5KW amplifying units (FMA 5000 HE). This transmitter can be supplied with dual exciter and changeover.

MAIN ADVANTAGES:
– Four amplifying units, each composed by six amplifying modules of 1.200W with robust LDMOS transistors of the latest technology.
– Each amplifying unit contains three 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.
– Automatic power reduction at night when used in combination with the EM 250 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.