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GatesAir Updates Maxiva MultiD for DAB Applications

Cites improved power and bandwidth management, monitoring and control functionality

Photo of the GatesAir MultiD transmitter, a single-rack-unit device

GatesAir will show the second generation of its Maxiva MultiD multichannel DAB/DAB+ radio transmitters at the upcoming NAB Show. It said the benefits include improved power and bandwidth management, connectivity and monitoring and control functionality.

This will be the first NAB Show where GatesAir and its new parent Thomson Broadcast will co-exhibit.

The company said its Europe team developed the updated MultiD Series to reduce the costs and infrastructure of per-site multichannel DAB broadcasting.

“The original MultiD system integrates three separate transmitters within a single 1RU chassis, instead of requiring a separate transmitter for each channel plus an external combiner and auxiliary hardware,” it said.

It also introduced efficiencies for DAB broadcasters through independent service inputs and signal processing engines, and a single modulator for three DAB radio services in a single channel band.

[Read more NAB Show news.]

The updated design now adds capacity for a fourth DAB service and removes the limitations of broadcasting all services within a single DAB channel band. “This means that MultiD customers can now broadcast four independent DAB radio services across separate channels (such as 10A, 10B, 11A and 11B). This is useful for broadcasters that were not allocated all licenses within a certain channel, for example.”

Power output per channel can now be built to a customer’s specifications. The original system capped at 150 W, limiting users to three DAB services at 50 Watts apiece. The new design means, for example, that broadcasters can order a 1.5 kW MultiD system to support three 500 W services, or a 1.2 kW system to support four 300 W services. “It is also possible to establish varied power levels across different DAB services.”

Systems are configurable to serve any combination of power levels for up to four DAB services. “The ability to divide system capacity is also useful for MultiD systems that share different tenants – a common occurrence in road tunnels where broadcasters can effectively consolidate resources to ensure consistent coverage of their most important broadcasts.”

In a streamlined architecture, the new system internally combines low-level RF signals, then generates and re-transmits all independent DAB services through one amplifier. It requires only a single band-pass filter and RF antenna connector for transmission.

The company said that even when supporting four DAB services, the MultiD design requires only a single modulator, reducing power consumption per channel.

NAB Booth: W2833