Transition Details:

GOES West
GOES 15 is set to replace GOES 11 (West) on December 14, 2011 at approximately 1620 UTC. .  All EMWIN users should obtain EMWIN-N capable systems to continue to receive the satellite broadcasts. Legacy EMWIN Equipment must be upgraded.

What GOES West Users need to do

For GOES West (11) users with EMWIN-N capable systems the transition will be very simple, wait for the change to occur and then configure the software demodulator. Then toggle the switch on the intermediate frequency adapter to the “QPSK” setting. Processing of the EMWIN-N broadcast can then begin.

Users that have not upgraded their legacy EMWIN systems still have options.  On or before December 14, 2011 legacy users need to re-point to GOES 12 at 60 degrees West. We recommend that these legacy users should try re-pointing to GOES 12 as soon as possible to determine if they will be able to acquire the signal from their location.  Legacy users not able to receive the GOES 12 broadcast can continue to receive EMWIN with an internet connection through the EMWIN byteblaster network.

The transition could occur earlier due to premature failure of the GOES 11 satellite. All users need to migrate to EMWIN-N capable systems.  Please see the vendor page on the EMWIN website.

GOES 12 is operating at 60 degrees West to help support the Caribbean and South America.  The EMWIN-I 9.6 kbps signal was activated on GOES 12 on May 5, 2010 and will remain on until further notice.   This service will eventually end, so it is strongly recommended that users transition as soon as possible. 

 

GOES East
The GOES East transition already occurred on April 26, 2010. GOES 13 replaced GOES 12 (formerly GOES East)  and is currently operating as GOES East.  It is transmitting the EMWIN-N broadcast.  

GOES East users will not need to do anything.

 

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Why the transition to EMWIN-N:

 

Changes in the next series of GOES satellites, the GOES-N thru P constellation, have necessitated development of EMWIN-N. Sometime before 2011 the current GOES satellites will be removed from operation and will be replaced by the new series. This will allow for the use of improved technologies, but all current EMWIN users will need to migrate due to frequency, power and modulation changes.

 

Coming Improvements Include:

• Data rate is doubled to 19.2 Kbps - More data!

• Forward error correction - Greater reliability

• Increased use of compression - More data!

• Enhanced data stream - Including regional Nexrad images

• Dedicated transponder

• No eclipse seasons

 

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• Go to the Latest News Page
• Go to the EMWIN-N Prototype Page
• Go to the EMWIN-N testing - for information on satellite tests