NOAA Office of Satellite and Product Operations

NOAA 19 COMM Subsystem Summary

Component Description Status
BTX 1 Beacon Transmitter #1 (137.35MHz) Green
BTX 2 Beacon Transmitter #2 (137.77MHz) Green
STX1 S-Band Transmitter #1 (1698MHz) Green
STX2 S-Band Transmitter #2 (1702.5MHz) Green
STX3 S-Band Transmitter #3 (1707MHz) Orange
STX4 S-Band Transmitter #4 (2247.5MHz) Green
VTX1 VHF Transmitter #1 (137.10MHz) Green
VTX2 VHF Transmitter #2 (137.9125MHz) Green

Subsystem History:

Date Time Component Description
7/22/2015 17:49:40   Implement 5 minute delay between STX off commands via SCT
2/5/2014 19:00:53 STX3 Turn STX3 off
2/5/2014 19:00:13 STX3 Deconfigure STX3 input path)
2/5/2014 15:48:49 STX3 Configure HRPT on STX3
2/4/2014 17:28:36 STX3 Turn STX3 on (carrier only)
2/4/2014 17:27:35 STX3 Deconfig STX3 for source (carrier only)
11/27/2012 20:17:00 STX3 Clear for STX3
11/27/2012 20:16:39 STX3 Turn off STX3
11/27/2012 18:33:46 STX3 Power cycle STX3 turn on
11/27/2012 18:33:33 STX3 Power cycle STX3 turn off
11/27/2012 17:01:37 STX3 Turn on STX3
11/27/2012 17:01:37 STX3 Configure for HRPT on STX3
10/29/2012 10:08:20 STX3 STX3's Output Power exhibited erratic behavior during Revs 19192 and19194. During Rev 19192, the STX Output Power dropped from 7.73 W to 0 W for a period of 8 seconds before rebounding to a value of 7.569 W (no temperature fluctuation was observed). During Rev 19194, the Output Power dropped from 7.73 W to 0 W with an accompanying temperatuere spike from 24 to 26 deg C. Throughout the rest of the pass for Rev 19194, the Output Power remained 0 W with the temperature reading ~25 deg C, nominal for an "on" state, and the transmitter status reading 5.1 TLM Volts, a nominal "on" value. Per the recommendation of Engineering, STX3 has been removed from operational use until further notice.
04/20/2011 14:41:00 STX2 NOAA-19's STX2 was activated to test FCDAS ability to receive real-time AIP data.
11/04/2010 05:22:30 STX1 NOAA-19's STX1 (HRPT TX) experienced an abrupt decrease in output power. The output power dropped 1.60 W (from 8.51 W to 6.91 W) and the orbital maximum temperature increased 3 deg. C (from ~28 deg. C to ~31 deg. C).
06/23/2009 18:31:15 VTX1 Turns on VTX1
06/23/2009 18:31:00 VTX2 Turns off VTX2
02/06/2009 11:49:20 VTX1 COMM Subsystem Nominal
02/06/2009 11:49:20 STX4 COMM Subsystem Nominal
02/06/2009 11:49:20 STX3 COMM Subsystem Nominal
02/06/2009 11:49:20 STX2 COMM Subsystem Nominal
02/06/2009 11:49:20 STX1 COMM Subsystem Nominal
02/06/2009 11:49:20 BTX 2 COMM Subsystem Nominal
02/06/2009 11:49:20 BTX 1 COMM Subsystem Nominal
02/06/2009 11:49:20 VTX2 COMM Subsystem Nominal
02/06/2009 11:43:20   VRA (VHF Real-time Antenna) Deployment