Harris Broadcast Communications Ships Energy-Efficient MDCL Transmitter to KBLA-AM

Multicultural Radio Broadcasting, Inc. (MRBI) radio station KBLA-AM in Los Angeles has upgraded its transmission system, with plans to light up a new Harris 3DX-50 solid-state AM transmitter by the end of January.

KBLA is a Spanish-language station transmitting mainly religious programming at 50,000 watts.  The new transmitter implements Modulation Dependent Carrier Level (MDCL) technology using Harris Adaptive Carrier Control Plus (ACC+) systems to help the station reduce average power consumption and operating costs.

“The power bill is of primary consideration when running a 50,000 watt radio station,” said Jim Glogowski, senior vice president and chief technical officer for MRBI.  “We burn a lot of power while transmitting at this level, so the Harris system helps our bottom line while offering a big environmental upside from a green standpoint.”

KBLA expects The Harris 3DX-50 AM Transmitter to pay for itself due to its energy-efficient MDCL technology

The exact MDCL algorithm for the KBLA system is AMC, short for Amplitude Modulation Companding.   Harris ACC+ systems support AMC as well as DCC (Dynamic Carrier Control), another MDCL algorithm.  Both offer high-power AM stations a way to sharply reduce power.  WOR-AM in New York City is one recent example, proving a power consumption savings of 37 percent using Harris ACC+ systems.


“We expect the transmitter will pay for itself in a very short period of time,” said Glogowski.

MRBI has several high-power Harris transmitter installations, including a 3DX-50 at KVRI-AM in Blaine, Washington.  Glogowski pointed to reliability and signal quality as other reasons for choosing the 3DX-50 for KBLA.

The new 3DX-50 includes a Harris Dexstar AM exciter, which Glogowski said establishes a technology roadmap for a future HD Radio upgrade — though he expects the station to continue operate in analog-only mode for the foreseeable future.   Other changes include basic modeling upgrades to the station antenna system for maximum efficiency.  KBLA also has a Harris Intraplex T1 STL system to provide high quality, robust delivery of content to the transmitter site.


About dimensionpr

Brian Galante is owner and president of Dimension PR, a technology-focused public relations agency.
This entry was posted in Articles and tagged , , , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s