Public Information Statement
Issued by NWS National HQ

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NOUS41 KWBC 221350

Service Change Notice 17-120
National Weather Service Headquarters Silver Spring, MD
150 PM EST Wed Nov 22 2017

To:  Subscribers:
  -NOAA Weather Wire Service
  -Emergency Managers Weather Information Network
  Other NWS partners and NWS employees

From:  Craig Hodan
  Chief, NWS Dissemination Systems Team

Subject:  GOES-14 Emergency Managers Weather Information Network
  Broadcast Available on or before December 11, 2017

On or before December 11, 2017, the Emergency Managers Weather
Information Network (EMWIN) broadcast from GOES 14 will be
activated and remain active for 6 months. The broadcast from
GOES-14 provides GOES-East users an additional opportunity to
continue to use their existing EMWIN satellite receivers and
software while making preparations for transitioning to the new
HRIT/EMWIN broadcast. The broadcast is scheduled to become
operational between December 14-20, 2017, when GOES-16 replaces
GOES-13 at the GOES-East station at 75.2 degrees West.

Service Change Notice 17-91 of July 28, 2017, provided
information on the transition from GOES-13 to GOES-16:

GOES-14 is expected to remain in its present geosynchronous
orbit at 105 degrees West throughout this service period.

Below are the GOES-14 EMWIN broadcast characteristics:

Frequency:    1692.7 MHz, linear polarization
Modulation:   PCM/NRZ-L/Offset QPSK
Data rate:    35940 ksps, 19200 bps CCSDS coding
Data format:  EMWIN Quick Block Transfer (QBT) packets

The GOES-14 EMWIN Broadcast will terminate on or about June 13,
2018. Before the broadcast ends, users should either reorient
their antennas to the GOES-15 (GOES-West) satellite at 135
degrees West to continue receiving the broadcast -- providing
the receiving stations is within the GOES-West satellite
footprint and has antenna direct line-of-sight to the satellite;
or (b) employ the new HRIT/EMWIN antennas, receivers and
software to receive the EMWIN broadcast on HRIT/EMWIN Virtual
Channels 20, 21, and 22, from the GOES-East satellite located at
75.2 degrees West.

The GOES-West satellite, GOES-15, is scheduled to be replaced by
GOES-S in the fall of 2018, introducing the HRIT/EMWIN broadcast
to GOES-West users and terminating the legacy EMWIN Offset QPSK

For more information, please contact:

National Service Change Notices are online at: is the U.S. government's official web portal to all federal, state and local government web resources and services.