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Thursday, January 27, 2011

ARCS Successfully Partipated in the 2011 Alaska EAN Live Code Test

On Wednesday, January 26, 2011, at 10:00AM Alaska time, the ARCS Television Network successfully received and relayed the EAS test consisting of the live EAN code and extended test message.  Following is a recording of the test as seen from an ARCS satellite receiver at our downlink monitoring rack, along with an image showing the printout from a Sage ENDEC connected to the same ARCS satellite receiver for demonstration and confidence purposes. 

As the video begins you see the top of hour ID from Alaska One, then the scheduled switch at 10:00 to KTVA where they are in a furniture commercial.  A few seconds later the test begins.  The header tone audio is muted for this recording.  You can see the ARCS crawl, then the KTVA test slide, then the ARCS slide for the duration.  Inside the crawl, you can see the time is off by one hour due to an error in the GMT offset inside the ARCS ENDEC.  This did not affect any downstream system; it only affected the time displayed in the ARCS crawl.  Audio from the test message begins 50 seconds later, it is clear and easy to understand.  At the end of the test the EOM is heard and the system returns to normal programming. 



Here is an image of the tape printed by the Sage ENDEC at the APBI offices.  This represents how any decoder listening to ARCS would have performed.  You can see from the time on the tape that this unit was not affected by the ARCS ENDEC offset error mentioned above.


ARCS plays a central role in the State of Alaska Emergency Relay Network as a conduit to commercial and noncommercial radio and television broadcasters. As provided for in the State’s Emergency Alert System Plan the ARCS satellite signal is a designated monitoring choice and is available to all Alaska broadcasters for their use in EAS participation.

Sunday, January 23, 2011

ARCS to Relay EAN Test

ARCS will participate in the upcoming live test of the EAN. The test will count as this month's RMT and will be held on Wednesday, january 26, 2011, at 10:00 AM Alaska Time.  You can see the official post at www.ready.alaska.gov/test

The ARCS satellite signal will relay the EAS test on the main ARCS channel inside our multiplex.  Here are the details in case you need them:

Satellite:  AMC8 at 139 degrees West, transponder 18, horizontal polarity. 
Carrier:  1093.5 MHz (4056.5 Cband), 13.250 mega-symbols, FEC rate 3/4
Channel:  1, audio 1-L. 

During the test ARCS will relay the audio from KFQD Radio in Anchorage, and a slide will be superimposed over the video.  The test is expected to last approximately 3 minutes. 

Following the test, video and audio results will be posted here. 

ARCS, Digital Television, and The Future


You have probably heard a lot about Digital Television and the upcoming February deadline when “all TV must be digital”. Well, not exactly. Even after February 2009, ARCS will still be “Analog” and your current TV will work just the same way it does now. You won’t need to make any changes to keep watching because ARCS is a “low-power” television system that is not required by the FCC to convert to digital at this time.

The FCC has required some 1,700 full-power stations nationwide to meet this conversion deadline. However there are nearly 7,000 low-power transmitters across the USA, just like ARCS, which are not yet required to convert. Most of these transmitters serve viewers in rural communities.

ARCS probably will convert to digital in the next three to five years, so eventually you will need to do something. One thing you can do right now is check out the TV Converter Box Coupon Program. Created by Congress, this program allows households to get up to two coupons, each worth $40, for use in obtaining a box that will convert over-the-air digital television signals for viewing on an analog television set. Even though you won’t need a converter to watch ARCS in the near term, you can still get your coupons, use them to purchase converters at the reduced cost, and then keep them for future use. You can find out more at http://www.dtv2009.gov/ or by calling toll free, 888-388-2009.

Meanwhile we continue to work with volunteers across the state, in more than 230 communities, to repair and maintain the ARCS system.

Would you like to help keep ARCS going in your community? Send an email to arcstv@gmail.com.