OMB FM TRANSMITTER EM 25000 HE DIG

The OMB 25KW FM transmitter, EM 25000 HE DIG PLUS, has been created by the OMB center of development for high efficiency transmitters. It consists on the high efficiency 25KW amplifier, FMA 25000 HE, and the EM 250 DIG PLUS, a 250W FM transmitter. The high efficiency 25KW amplifier is composed by eight 5KW amplifying stages (FMA 5000 HE) and it is also available in Dual Drive version.

MAIN FEATURES OF THE 25KW FM TRANSMITTER MANUFACTURED BY OMB:

8 amplifying stages with 4 amplifying modules of 1,2KW with MOSFET technology each.
Each amplifying stage contains 3 independent switching power supplies connected in parallel for maintaining the operation of the equipment in case of failure of any of them.
TFT screen and touch keyboard for the control and visualization of operation parameters ? Memory recording of events.
Speed control of cooling fans according to the temperature of power modules for optimizing the consumption and decreasing the 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.
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 failure of one of thepower supplies and in case of excessive reflected power.
Optionally Telemetry TCP/IP, SNMP, Webserver.