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NOAA 17 COMM Subsystem Summary

Component Description Status
BTX 1Beacon Transmitter #1 (137.35MHz)Green
BTX 2Beacon Transmitter #2 (137.77MHz)Green
STX1S-Band Transmitter #1 (1698MHz)Orange
STX2S-Band Transmitter #2 (1702.5MHz)Green
STX3S-Band Transmitter #3 (1707MHz)Red
STX4S-Band Transmitter #4 (2247.5MHz)Green
VTX1VHF Transmitter #1 (137.50MHz)Green
VTX2VHF Transmitter #2 (137.62MHz)Green


Subsystem History:

Date Time Component Description
11/06/201202:50:25STX2STX2 turned on and configured for HRPT and Omni Antenna (RHCP).
11/06/201202:50:00STX1STX1 turned off due to severely degraded output power.
11/01/201209:10:00STX1On Rev 53836, NOAA-17's STX1's Output Power flagged RL at a severly degraded value ~0 W. Due to such a weak RF signal, real-time HRPT users will see degraded data or minimal signal from the spacecraft.
10/12/201015:08:45VTX1Turn on VTX1. VTX 1 becomes prime
10/12/201015:08:45VTX2VTX2 is turned off
03/02/200821:31:00STX1On 08/062 at 21:31z STX1 output power dropped from ~5.1 W to 2.29 W. Transmitter is still operable.
02/26/200802:55:00STX2Configured STX2 to directional antenna.
02/15/200821:10:00STX2Configure STX-2 to an omni antenna
02/14/200812:45:00STX3During the 00:53z Wallops pass, the stations was unable to lock onto STX-3. The STX-3 power was flagging red low at .2W. It is unusable at htis time.
01/25/200816:00:00STX4STX-4 Testing Complete. STX-4 is operational.
01/25/200815:58:00STX4Turn on STX4.
01/25/200815:58:00STX4Configure STX4 to transmit HRPT.
01/25/200815:58:00STX4Clears STX4 config.
01/25/200815:58:00STX4Selects AIP data type.
01/25/200815:58:00STX4Configures STX4 to transmit AIP.
01/25/200815:58:00STX4Turn off STX4.
01/24/200816:15:30STX4Turn on STX4.
01/24/200816:15:30STX4Clear STX4 config.
01/24/200816:15:30STX4Config. STX4 to DTR4A.
01/24/200816:15:30STX4Turn off STX4.
01/17/200818:52:00STX4STX-4 recovered after XSU swap. Not all data types confirmed.
01/17/200818:52:00STX4Turn on STX4 for STX-4 testing
01/17/200818:52:00STX4Clear STX4 config for STX-4 testing
01/17/200818:52:00STX4Playback GAC data from DTR4A for STX-4 testing
01/17/200818:52:00STX4Turn off STX4 for STX-4 testing
01/17/200818:52:00STX4Turn on STX4.
01/16/200816:01:00STX4Turn on STX4.
01/16/200816:01:00STX4Clear STX4 config.
01/16/200816:01:00STX4Select playback of TIP data.
01/16/200816:01:00STX4Config. STX4 to playback TIP data.
01/16/200816:01:00STX4Select TIP Bi-phase data.
01/16/200816:01:00STX4Turn off STX4.
06/28/200717:09:10STX4Turns on STX4, then configures it for HRPT, then AIP, and then finally deconfigures STX4 and turns it off.
06/28/200715:27:00STX4Turns on STX4, then configures it for HRPT, then AIP, and then finally deconfigures STX4 and turns it off.
06/20/200722:12:40STX4Turn off STX4.
06/20/200720:32:30STX4Turn on STX4.
06/19/2007STX4SOCC crews were unable to recover data using STX4 (2247.5MHz). All telemetry indications for STX4 appears nominal.
09/07/200514:40:00BTX 2Turn on BTX2
07/05/200514:05:00VTX2Took out VTX-2 power on and off toggling from stored command table and commanded VTX-2 back on. VTX-2 should now remain on continuously.
07/03/200508:50:00VTX2VTX-2 (APT) transmitter inadvertently turning off during each CDA support then back on when support is completed. Scheduling software under investigation.
03/22/200502:00:00STX1STX-1 taken out of operational rotation because of lower output power. Playbacks previously performed by STX-1 are now being performed by STX-4.
03/07/200519:00:00STX1STX-1 component status downgraded to YELLOW. Comm subsystem remains GREEN.
03/04/200509:12:00STX4Configure STX-4 for parallel playback at FCDA with STX-1 (data quality comparison retest). No data quality differences apparent.
03/04/200502:19:00STX4Configure STX-4 for parallel playback at WCDA with STX-1 (data quality comparison retest). No data quality differences apparent.
03/03/200519:55:00STX4Configure STX-4 for parallel playback at FCDA with STX-1 (data quality comparison test). No data quality differences apparent.
03/03/200515:00:00STX4Configure STX-4 for parallel playback at WCDA with STX-1 (data quality comparison test). No data quality differences apparent.
02/14/200519:29:17STX1STX-1 peak power dropped to 6 watts from a nominal 9 watts with acompanying increased temperature during transmissions. Peak power remains at this level during each pass. No data dropouts observed.
02/16/200412:30:00BTX 2Command BTX-2 back on.
02/14/200402:57:00BTX 2BTX-2 inadvertently turned off from stored command table.
09/24/200317:20:00STX4Turnoff STX-4 (Test complete)
09/24/200315:35:00STX4Turnon STX-4 for 1 orbit test.
08/28/200319:35:00BTX 2Turnon BTX-2 to end AMSU-A1 channel-7 data quality test
08/28/200319:30:00BTX 1Turnoff BTX1
08/28/200319:25:00BTX 1Turnon BTX-1 to support AMSU-A1 data quality test.
08/28/200319:20:00BTX 2Turnoff BTX-2 for AMSU-A1 Channel 7 data quality test.
06/05/200312:00:00STX4No degradation of data using transmitter, Power at turn-on is 6.4w then slowly gets to 7.5w over several minutes.
05/12/200316:20:00STX4TURN STX4 OFF
05/12/200316:20:00STX4TURN STX4 OFF end CDA signal analysis
05/12/200314:40:00STX4TURN STX4 ON
05/12/200314:40:00STX4TURN STX4 ON FOR SIGNAL TESTING AT CDA
04/30/200319:08:00STX4TurnOFF STX-4 power to end power analysis test.
04/30/200317:35:00STX4Turnon STX-4 for power output testing purposes
04/29/200310:51:00STX4STX-4 nominal power output appears to have degraded by approxemately 1 watt.
04/28/200308:34:00STX3STX-3 power of 8 watts nominal has dropped to 2 watts. Component downgraded to YELLOW status.
04/09/200320:20:00STX4Turn STX4 off to end Svalbard test.
04/07/200316:10:00STX4Turn STX4 on for 48hr Svalbard test.
10/10/200212:00:00STX1RF Iinterference experienced
10/10/200212:00:00STX2RF interference with (apparently) NOAA-9 being reported. Team formed to investigate
10/10/200212:00:00STX3RF interference with (apparently) NOAA-9 being reported. Team formed to investigate
10/10/200212:00:00STX4RF interference with (apparently) NOAA-9 being reported. Team formed to investigate
09/05/200218:10:00STX4Turnon STX-4 for 1 orbit (testing purposes)
08/27/200212:01:00BTX 1Turned off BTX1
08/27/200212:01:00BTX 2Turned on BTX2
08/20/200217:24:00STX4Turn STX 4 On
06/24/200218:56:00STX1On Orbit
06/24/200218:56:00STX2On Orbit
06/24/200218:56:00STX3On Orbit
06/24/200218:56:00STX4On Orbit
06/24/200218:56:00BTX 1On Orbit
06/24/200218:56:00BTX 2On Orbit
06/24/200218:56:00VTX1On Orbit
06/24/200218:56:00VTX2On Orbit
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Info & History

Status Key
Status Color Meaning
GREEN Operational
(or capable of)
YELLOW Operational with limitations
(or Standby)
ORANGE Operational with Degraded Performance
RED Not Operational
BLUE Functional,
Turned Off
BLANK No Status Reported