09.04.2009 09:00 AM
Low-Power KAXT Goes Digital With 20 Sub-Channels Available
KAXT-CA, a low-power community television station in San Jose, Calif., has deployed a digital ATSC television service capable of up to 20 MPEG-2 video and audio services within its 19.39 Mbps signal.

The station is using video processing gear from Harmonic, transmission equipment from Linear Industries and PSIP generation from Triveni Digital. It’s the first station in the United States ready to unleash such a broad range of channels.

Harmonic’s DiviCom Electra 5000 encoders, DiviTrackIP statistical multiplexing and NMX Digital Service Manager are used to compress and manage the video and audio services. Triveni’s GuideBuilder PSIP generator manages the virtual channels and EPG metadata files and feeds the carousel to the Harmonic ProStream 1000 remultiplexer over IP.

The GuideBuilder also provides a path to mobile DTV.

The Linear Industries AT71KO-1 1000-watt digital UHF transmitter and AT7001 exciter provide linear and nonlinear pre-correction.

“This new service is a technological feat and establishes a new business model for KAXT,” said Warren Trumbly, KAXT president. “The solutions from Harmonic, Linear and Triveni Digital make it possible to deliver more channels with excellent video quality when compared with the previous analog service we ran for years—without breaking our budget. We have been able to add a variety of programs and offer more multicultural content for the diverse population of the Bay Area, an exciting opportunity for us to better serve viewers and grow our revenues.”

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Posted by: Sanjay Talwani
Fri, 09-04-2009 01:36 PM Report Comment
That's only 1M per channel! How could that possibly be "excellent video quality"? Or are some of the channels audio only?
Posted by: Sanjay Talwani
Fri, 09-04-2009 01:46 PM Report Comment
OK, I guess the key word is "capable". It appears they are airing 12 video and 4 audio channels with plans for more audio channels. Still, that's pretty amazing.
Posted by: Sanjay Talwani
Mon, 10-04-2010 06:03 PM Report Comment
I have watched it here in San Jose. It is the worst quality video I've seen broadcast since the invention of color TV. Packing so many channels into one carrier... well something has to give.

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