OMB EM 2000 HE DIG PLUS HPPS

Product Overview

The OMB EM 2000 HE DIG PLUS HPPS is a 2kW high-efficiency FM transmitter that combines the FMA 2000 HE HPPS power amplifier with an EM 25 DIG PLUS digital exciter. It is aimed at medium-power FM sites that need low operating costs, hot-plug serviceability and robust protection. With typical AC efficiency above 73%, the transmitter significantly reduces energy consumption compared to legacy designs.

At a Glance

• 2kW FM transmitter, 87.5–108MHz with adjustable output power.
• High-efficiency FMA 2000 HE HPPS amplifier stage.
• EM 25 DIG PLUS exciter with 25W nominal output.
• AC efficiency >73% typical, RF efficiency ≈84%.
• Dual hot-swappable switching PSUs in parallel.
• Two LDMOS RF modules with forced-air cooling.
• Integrated low-pass RF filter and mains EMI filter.
• Optional stereo generator, RDS encoder and AES/EBU input.

System Details

The FMA 2000 HE HPPS section uses two 1200W LDMOS amplifier pallets combined for 2000W RF output. Parallel hot-plug power supplies share the load, so the transmitter can remain on air if one supply is removed or fails. A low-pass filter, mains EMI filter and surge protection are included to meet spectrum and power-quality requirements at professional broadcast sites.

The EM 25 DIG PLUS exciter offers wide-band frequency agility across the FM band with low distortion and selectable pre-emphasis. Analogue audio, MPX and auxiliary inputs support external stereo generators and RDS encoders, or these functions can be fitted internally. Local control is via a front-panel display and keypad, while telemetry and remote control options allow integration with existing monitoring and control systems. This combination makes the OMB EM 2000 HE DIG PLUS HPPS a compact, energy-efficient solution for 2kW FM transmission.