NOAA 15 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)	Yellow
STX2	S-Band Transmitter #2 (1702.5MHz)	Orange
STX3	S-Band Transmitter #3 (1707MHz)	Red
STX4	S-Band Transmitter #4 (2247.5MHz)	Green
VTX1	VHF Transmitter #1 (137.50MHz)	Green
VTX2	VHF Transmitter #2 (137.62MHz)	Green

Subsystem History:

Date	Time	Component	Description
10/12/2010	15:49:41	VTX1	Turns off VTX1
10/12/2010	15:49:41	VTX2	Turns on VTX2. VTX2 became prime
08/01/2010	20:46:51	STX2	STX2 (HRPT transmitter) experienced an abrupt 4.71 W drop in output power. STX2 currently has an output power of ~1.25 W and its average orbital maximum temperature is ~26 deg. C.
11/29/2009	10:45:13	STX4	STX4 turned on for McMurdo call-up pass.
11/29/2009	10:45:13	STX4	Turned off STX4 after McMurdo call-up pass for close approach.
06/20/2007	16:49:30	VTX1	Turn VTX1 on.
06/19/2007	12:00:00	VTX1	Turn onVTX1, due to conflict with NOAA-12 ending.
05/17/2007	12:00:00	VTX1	Turn off VTX1, due to conflict with NOAA-12.
02/27/2007	20:00:00	VTX1	Turn on VTX1. Conflict with NOAA-12 ended
02/27/2007	20:00:00	VTX1	Turn on VTX1.
01/26/2007	13:52:00	VTX1	Turn off VTX1, due to conflict with NOAA-12.
01/25/2007	13:00:00	VTX1	Turn off VTX1.
01/25/2007	13:00:00	VTX1	Turn off VTX1, due to conflict with NOAA-12.
11/13/2006	21:50:00	VTX1	Turn on VTX1 (APT data) RF conflict with N12 over.
10/07/2006	04:00:00	VTX1	Turn off VTX1, due to conflict with NOAA-12.
07/31/2006	12:00:00	STX1	STX-1 (an unused transmitter) was declared yellow because of its tendency to interfere with AMSU-B data.
06/18/2006	21:00:00	VTX1	Turn off VTX1 due to conflict with N12
04/02/2006	23:00:00	VTX1	Turn on VTX1 Conflict with NOAA 12 Over
03/01/2006	18:00:00	VTX1	Turn off VTX1 due to RF conflict with N12.
12/16/2005	18:35:00	VTX1	Conflict with N12 ended. Turn on VTX1 (APT data).
11/13/2005	19:00:00	VTX1	Turnoff VTX1 due to conflict with N12. No N15 APT until conflict period is over.
08/30/2005	07:30:00	VTX1	VTX-1 turn on (Conflict with N12 over). N15 APT data flow resumes.
07/29/2005	14:00:00	VTX1	Turn OFF VTX-1 (APT data) because of RF conflict with N12
05/27/2005	18:25:00	STX2	On 27 May at 18:25z the STX2 Omni (HRPT) transmitter experienced an abrupt drop in output power from its nominal value of 7.5 watts down to 3.3 watts. Several minutes later the power increased to 5.5 watts where it remains. No obvious effect on HRPT imagery at SOCC.
05/16/2005	18:15:00	VTX1	VTX1 turnon conflict with N12 over.
04/15/2005	19:58:00	VTX1	VTX1 turnoff (conflict with N12)
02/01/2005	15:00:00	VTX1	Turn VTX-1 (APT data) back on. Conflict with N12 over.
01/01/2005	14:51:00	VTX1	VTX1 Off due to conflict with NOAA 12. No APT on NOAA 15 during conflict period.
10/20/2004	17:05:00	VTX1	Turnon VTX-1 (APT data). RF conflict with N12 ended.
09/19/2004	22:00:00	VTX1	Turnoff VTX-1 (APT data) for duration of RF conflict with N12 (through 20 Oct)
07/08/2004	12:00:00	VTX1	RF Conflict with N12 ends. TurnON VTX-1 (APT data)
07/07/2004	23:30:00	VTX1	RF Conflict with N12 ended. VTX-1 (APT data) turned back on.
06/07/2004	12:00:00	VTX1	Turnoff VTX-1 (APT data) because of RF conflict with N12
06/07/2004	12:00:00	VTX1	Turn VTX-1 OFF (APT data) because of RF conflict with N12.
03/24/2004	13:05:00	VTX1	VHF (VTX-1) APT turn back on. Conflict with N12 ends.
02/21/2004	12:01:00	VTX1	VHF (VTX-1) APT data turnoff, conflict with N12 VTX.
01/16/2003	15:30:00	VTX1	Turn on VTX1, ending conflict with NOAA-12.
11/03/1998		STX1	Turned off to eliminate AMSU-B interference
06/17/1998		VTX1	VRA boom deployed
06/17/1998		VTX2	VRA boom deployed
06/01/1998		STX2	Switched to omni-directional mode
05/31/1998		STX2	Transmitter noisy - 0.5W increase in output power
05/13/1998	16:36:00	STX3	Unit taken out of service. Data unreliable because of intereference with AMSU-B
05/13/1998	16:36:00	VTX1	VRA boom not fully deployed following launch
05/13/1998	16:36:00	VTX2	VRA boom not fully deployed following launch
05/13/1998	16:24:00	STX1	On Orbit
05/13/1998	16:24:00	STX2	On Orbit
05/13/1998	16:24:00	STX3	On Orbit
05/13/1998	16:24:00	STX4	On Orbit
05/13/1998	16:24:00	BTX 1	On Orbit
05/13/1998	16:24:00	BTX 2	On Orbit
05/13/1998	16:24:00	VTX1	On Orbit
05/13/1998	16:24:00	VTX2	On Orbit
12/30/1994	10:36:00	VTX1	On Orbit