**POLAR Spacecraft Status As of: Tues 24 July 07, 17:00 EST**

*(Changes* from last week in bold border)

+-----------+----------+----------+-----------+-----------+-----------+
| **Sub     | **NO     | **NO     | **N       | #####     | #####     |
| system/** | AA-12D** | AA-15K** | OAA-16L** |  NOAA-17M |  NOAA-18N |
|           |          |          |           |           |           |
| **Co      | AM       | AM:      | PM:       | AM:       | PM        |
| mponent** | 16:59=AN | 17:49=AN | 15:04=AN  | 22:23=AN  | 13:49=AN  |
|           |          |          |           |           |           |
|           | STIP     | GAC data | GAC&LAC   | GAC&LAC   | GAC & LAC |
|           | data     | only     | data      | data      | data      |
|           | only     |          |           |           |           |
|           |          |          |           |           |           |
|           | No IPD   |          |           |           |           |
|           | pr       |          |           |           |           |
|           | ocessing |          |           |           |           |
+===========+==========+==========+===========+===========+===========+
| **L       | 05/14/91 | 05/13/98 | 09/21/00  | 6/24/02   | #######   |
| AUNCHED** |          |          |           |           |  5/20/05  |
+-----------+----------+----------+-----------+-----------+-----------+
| **CNTL    | OBP2     | OBP2     | OBP2      | OBP2      | OBP2      |
| OBP**     |          |          |           |           |           |
|           | R        |          |           |           |           |
|           | ecursive |          |           |           |           |
|           | SCT      |          |           |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **BUS**   | B-BUS    | B-BUS    | B-BUS     | B-BUS     | B-BUS     |
|           |          |          |           |           |           |
|           | XSU-1    | XSU-1    | XSU-1:    | XSU-1     | XSU-1     |
|           |          |          | TOAR444   |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **BUS     | NO       | NO       | NO        | NO        | NO        |
| VETO**    |          |          |           |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **ADACS** | [Nominal | [Nominal | ####      | ######    | [Nominal  |
|           | M        | M        | ## [RGYRO |  [Nominal | Mode]{.u  |
|           | ode]{.un | ode]{.un |  Mode]{.u |  Mode]{.u | nderline} |
|           | derline} | derline} | nderline} | nderline} |           |
|           |          |          |           |           | Gyro-A    |
|           | Au       | Rgmode   | Estimate  | Rgmod     | MIMU-2    |
|           | tonomous | =Monitor | Y-ROLL    | e=Monitor |           |
|           | swap to  |          |           |           | Z-wheel   |
|           | YGC 30   | Gyro-3   | Rgmod     | Gyro-3    | -Pitch    |
|           | Aug 06,  | Off      | e=PASSIVE | Off       |           |
|           | c        | 6/26/00  |           | 6/10/04   | TOAR 447  |
|           | ommanded | Gyro     | Gyros-1 & |           |           |
|           | back to  | c        | 3         | Gyro      | Z         |
|           | nominal  | hans=AAB | Inop/Off  | chans=AAB | -momentum |
|           | 31 Aug   |          |           | GAS       | t         |
|           |          | N2 Low   | Gyro      | Enabled   | ransition |
|           | RGmode   | PSI      | chans     | Dec 05    | complete  |
|           | =Monitor | invalid  | XA-ZB     |           |           |
|           |          |          |           |           | Pitch     |
|           | Gyro     |          | Pitch     |           | Torquer   |
|           | c        |          | wheel     |           | again     |
|           | hans=XYZ |          | bias 2400 |           | active    |
|           |          |          |           |           |           |
|           |          |          | Gyro2     |           |           |
|           |          |          | safe      |           |           |
|           |          |          | macro     |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **RXO**   | PRI      | PRI      | PRI       | PRI       | PRI       |
|           |          |          |           |           |           |
|           | BU       | daily    | Daily     | Daily     | No daily  |
|           | random   | bias -8  | Bias      | Bias --3  | bias      |
|           | enables  | mS       | --5.5 mS  | mS        |           |
|           |          |          |           |           | -1500 mS  |
|           | daily    | -500 mS  | -1500 mS  | -1500 mS  | 31Dec05   |
|           | bias+6.5 | 12/31/05 | 31Dec05   | 31Dec05   |           |
|           | mS       |          |           |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **CLOCK   | 2        | 2        | 2         | 2         | 2         |
| DIV**     |          |          |           |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **MIRP**  | External | External | External  | External  | External  |
|           | Synch    | Synch    | Sync      | Sync      | Synch     |
|           |          | Rephase  |           |           |           |
|           | Rephase  | 0730     | Rephase   | Rephase   | Rephase   |
|           | Enabled  | daily    | each      | Enabled   | Enabled   |
|           |          |          | orbit     |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **TIP     | 1        | 2        | 2         | 2         | 1         |
| SIDE**    |          |          |           |           |           |
|           |          | (since   | since     | Swapped   | Analog    |
|           |          | 4/3/03)  | 4/18/05   | 9/20/06   | telem     |
|           |          |          |           |           | drifting  |
|           |          | 3        | (analog   |           |           |
|           |          | channels | d         |           |           |
|           |          | inop     | rifting?) |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **Re      | DTRs 3A, | DTRs 1,  | DTRs 1,   | DTR 1,3,4 | SSRs      |
| corders** | 4, 5B    | 2, 3, 4  | 2, 3, 4A  | / SSR 2   | 1,2,3,4,5 |
|           |          | S        |           |           |           |
| **(DTR,   | S        | afestate | Safestate | Safe      | Saf       |
| SSR)**    | afestate | 1B EOT   | 3A        | state=SSR | estate=5B |
|           | 5B       |          |           | 2B        |           |
|           |          |          | 4B STIP   |           | Current   |
|           | 4b low   |          | only      | 4A        | spikes    |
|           | pressure |          |           | Pressure  |           |
|           |          |          |           | leak      |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **VTX**   | #1 ON    | #1 ON    | OFF /     | #2 ON     | #2 ON     |
|           |          |          | INOP      |           |           |
| (APT      | 137.50   | As of 19 |           | 137.62    | 137.9125  |
| data)     | MHZ      | June 07  | since     | MHZ       | MHZ       |
|           |          |          | 11/15/00  |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **BTX**   | #1       | #1       | #2        | #         | #1        |
|           |          |          |           | ###### #2 |           |
|           | 136.77   | 137.35   | 137.77    |           | 137.35    |
|           | MHZ      | MHZ      | MHZ       | 137.77    | MHZ       |
|           |          |          |           | MHZ       |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **STX**   | 1 --     | 2-Omni   | 2 -- HRPT | 3 -- HRPT | 1 - HRPT  |
|           | HRPT;    | HRPT     |           |           |           |
| 1 = rcp   |          |          | 1--       | TOAR424   | 3 -       |
| 1698.0    | 2,3 -    | 2        | Playback  | low power | Playback  |
| mhz       | Playback | Omni=rcp |           |           |           |
|           |          |          | 4 --      | 2 & 1     | 2         |
| 2 = lcp   |          | Power    | Playback  | Playback  | -Playback |
| 1702.5    |          | TOAR 446 |           |           |           |
| mhz       |          |          | & MCM     | STX-1     | 4-Test &  |
|           |          | 4-       | usage     | Power     | Standby   |
| 3= rcp    |          | Playback |           | drop      |           |
| 1707.0    |          |          | 3 low     |           |           |
| mhz       |          | 1,2,3-   | power     | STX-4 no  |           |
|           |          | Degraded | unused    | m         |           |
| 4= rcp    |          |          |           | odulation |           |
| 2247.5    |          |          |           |           |           |
| mhz       |          |          |           |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| ### POWER | [        | [Array   | [Array    | [Array    | [Array    |
|           | ArrayOff | Off      | Off       | Off.      | Off.      |
| (Array    | -60]{.un | -45]{.un | -40]{.u   | --40]{.u  | -40]{.u   |
| offset    | derline} | derline} | nderline} | nderline} | nderline} |
| and CANT  |          |          |           |           |           |
| angle,    | [since   | [Since   | [Since    | [Since    | [Since    |
| eclipse   | 5/23     | 1/25     | 7/        | 1/        | 6         |
| states    | /07]{.un | /01]{.un | 16/]{.und | 29/04]{.u | /6/05]{.u |
| and sun   | derline} | derline} | erline}02 | nderline} | nderline} |
| angle)    |          |          |           |           |           |
|           | Full Sun | Full Sun | Eclipse   | Eclipse   | Eclipse   |
|           |          |          | all year  | all year  | all year  |
|           | Sun      | Sun      |           |           |           |
|           | Angle 16 | Angle 13 | Sun Angle | Sun Angle | Sun Angle |
|           | uptrend  |          | 34        | at 66     | 63        |
|           | to 20 in | Uptrend  |           |           | uptrend   |
|           | early    | to 18    | Steady    | Steady    | to 65 on  |
|           | Jan 07   | early    | trend     | trend     |           |
|           |          | Jan 07   |           |           | 1 Jan 07  |
|           | Shunt    |          | SA        | SA        |           |
|           | degraded | SA       | CANT=22   | CANT=37   | SA        |
|           |          | CANT=37  | degs      | degs      | CANT=22   |
|           | SA       | degs     |           |           |           |
|           | CANT=37  |          | Tran      |           | BVR Phase |
|           | degs     | BVR      | sitioning |           | Control   |
|           |          | Phase    | to full   |           | auton     |
|           | PSSS     | Control  | sun S/C   |           | swap      |
|           | trigger  | auton    | in Sept   |           | 3/29/06 & |
|           | =18.5    | swap     | 07        |           | 1/4/07    |
|           |          | 7/19/07  |           |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **AVHRR** | Nominal  | Nominal  | Nominal   | ##        | Nominal   |
|           |          |          |           | # Nominal |           |
|           | HRPT and | Channel  | Recent SM |           | Channel   |
|           | APT data | 3B only  | current   | 3A-B      | 3B only   |
|           | only     |          | increases | switch    |           |
|           |          | Oc       |           | enabled   | Scan      |
|           |          | casional | TCE24 OFF |           | motor     |
|           |          | minor    | 4/14/04   | Previous  | current   |
|           |          | scan     |           | scan      | drop 29   |
|           |          | motor    | Channel   | motor     | Aug 06    |
|           |          | insta    | 3B only   | current   |           |
|           |          | bilities |           | mini      |           |
|           |          |          |           | surges    |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **        |          | Ope      | Op        | OFF/INOP  | Nominal   |
| AMSU-A1** |          | rational | erational |           |           |
|           |          |          |           | Since     | Full Scan |
|           |          | Ch14     | Primary   | 10/30/03  | mode      |
|           |          | ino      | PLLO      |           |           |
|           |          | perative | chans     | Survival  |           |
|           |          |          | 9-14 bias | heat on.  |           |
|           |          | Ch11     | shift.    |           |           |
|           |          | ino      |           |           |           |
|           |          | perative | Backup    |           |           |
|           |          |          | PLLO      |           |           |
|           |          |          | inop.     |           |           |
|           |          |          |           |           |           |
|           |          |          | Channel   |           |           |
|           |          |          | 9-14      |           |           |
|           |          |          | noise     |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **\`      |          | Nominal  | Nominal   | Nominal   | Nominal   |
| AMSU-A2** |          |          |           |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| *         |          | Ope      | Op        | Nominal   | **        |
| *AMSU-B** |          | rational | erational |           | *Replaced |
|           |          |          |           |           | by MHS*** |
|           |          | Bias in  | Space     |           |           |
|           |          | All      | P         |           |           |
|           |          | Chans.   | osition-3 |           |           |
|           |          |          |           |           |           |
|           |          | Degraded | Chan-8    |           |           |
|           |          | Chan-3   | de        |           |           |
|           |          |          | gradation |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| ### HIRS  | ON/Inop  | NOMINAL  | NOMINAL   | NOMINAL   | ###       |
|           |          |          |           |           | ##### Ope |
|           | Turned   | FW       | New all   | 1 Pixel   | rational  |
|           | On       | Abrupt   | time high | cr        |           |
|           | 4/30/05  | return   | filter    | oss-track | Filter    |
|           |          | to       | motor     | misa      | Heat OFF. |
|           | for      | nominal  | current   | lignment. |           |
|           | power    | 7/12/05  | reached   |           | ##        |
|           | balance  |          | 9/17/06.  |           | ###### LW |
|           |          | After    |           |           |  channel  |
|           | Filter   | years of | Imagery   |           | 1-12 nois |
|           | Wheel    | minor    | occ       |           | e TOAR 44 |
|           | OFF      | and      | asionally |           | 8 Loose L |
|           |          | major    | exhibits  |           | WIR lens. |
|           |          | current  | high      |           |           |
|           |          | surges   | levels of |           | LW        |
|           |          |          | ra        |           | imagery   |
|           |          | FW       | diometric |           | erratic.  |
|           |          | mode=Hi  | noise     |           |           |
|           |          | Powr     |           |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| ##        |          |          |           |           | Nominal   |
| # MHS/MIU |          |          |           |           |           |
|           |          |          |           |           | Fly Wheel |
|           |          |          |           |           | Motor     |
|           |          |          |           |           | Current   |
|           |          |          |           |           | Spiking   |
|           |          |          |           |           | but not   |
|           |          |          |           |           | alarming  |
|           |          |          |           |           | since 27  |
|           |          |          |           |           | Dec 06    |
|           |          |          |           |           |           |
|           |          |          |           |           | Entered   |
|           |          |          |           |           | Motor     |
|           |          |          |           |           | Spin      |
|           |          |          |           |           | State on  |
|           |          |          |           |           | 27 March  |
|           |          |          |           |           | 07        |
+-----------+----------+----------+-----------+-----------+-----------+
| **MSU**   | ON/Inop  |          |           |           |           |
|           |          |          |           |           |           |
|           | Turn on  |          |           |           |           |
|           | 7/9/07   |          |           |           |           |
|           | for      |          |           |           |           |
|           | power    |          |           |           |           |
|           | balance  |          |           |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **SSU**   |          |          |           |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **DCS**   | Nominal  | Nominal  | Nominal   | Nominal   | Nominal   |
|           |          |          |           |           |           |
| RFI       |          |          | Pseudo    |           | DRU's 1-7 |
| inve      |          |          | message   |           | On        |
| stigation |          |          | turned on |           |           |
|           |          |          | 1/5/06    |           | DRU8      |
|           |          |          |           |           | inop/off  |
+-----------+----------+----------+-----------+-----------+-----------+
| **SARR**  |          | Ope      | Op        | Nominal   | Nominal   |
|           |          | rational | erational |           |           |
|           |          |          |           | A-side    | A-Side    |
|           |          | A-Side,  | Mode =AA  |           |           |
|           |          | AGC Mode |           | All AGC   | All AGC   |
|           |          |          | A-side,   | Mode      | Mode      |
|           |          | Inte     | AGC Mode  |           |           |
|           |          | rmittent |           |           | Since 15  |
|           |          | failures | (B-side   |           | Aug 05    |
|           |          | for      | in FG     |           |           |
|           |          | 243MHz   | mode)     |           |           |
|           |          | A&B      |           |           |           |
|           |          |          | 243 MHz = |           |           |
|           |          |          | INOP.     |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **SARP**  |          | Nominal  | Nominal   | Nominal   | Nominal   |
|           |          |          |           |           |           |
|           |          | RCVR B/W | RCVR B/W  |           | A-side 23 |
|           |          | = 2      | = 2       |           | May05     |
+-----------+----------+----------+-----------+-----------+-----------+
| **SEM**   | ON       | Nominal  | Nominal   | Nominal   | Nominal   |
|           | /Nominal |          |           |           |           |
|           |          | E-CDE    | E-CD      | E-CD      | Elec-     |
|           | Au       | M-HVPS=2 | EM-HVPS=6 | EM-HVPS=2 | CH-HVPS=1 |
|           | tonomous |          |           |           |           |
|           | reset    | P-CDE    | P-CD      | P-CD      | 27 June   |
|           |          | M-HVPS=0 | EM-HVPS=5 | EM-HVPS=4 | 06 17:00z |
|           | 8 Jun    |          |           |           |           |
|           | 06, back |          | 27 Jun    | 27 June   | Prot-     |
|           | to       |          | 0615:30z  | 06 16:00z | CH-HVPS=0 |
|           | nominal  |          |           |           |           |
|           | 10 June  |          |           |           |           |
|           |          |          |           |           |           |
|           | Turned   |          |           |           |           |
|           | on       |          |           |           |           |
|           | 8/30/04  |          |           |           |           |
|           |          |          |           |           |           |
|           | Elec-C   |          |           |           |           |
|           | H-HVPS=4 |          |           |           |           |
|           |          |          |           |           |           |
|           | Prot-C   |          |           |           |           |
|           | H-HVPS=0 |          |           |           |           |
|           |          |          |           |           |           |
|           | TED      |          |           |           |           |
|           | level=3  |          |           |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **SBUV**  |          |          | Op        | Nominal   | Nominal   |
|           |          |          | erational |           |           |
|           |          |          |           | Anode     | Anode     |
|           |          |          | Degraded  | Mode      | mode      |
|           |          |          | Ozone     |           |           |
|           |          |          | data      | Plan      | since 6   |
|           |          |          |           | sweep     | July 05   |
|           |          |          | Backup    | mode      | 13:30z    |
|           |          |          | Diffuser  |           |           |
|           |          |          | inop      | Standard  | El        |
|           |          |          |           | Ops       | ectronics |
|           |          |          | Primary   |           | turnoff   |
|           |          |          | Diffuser  | TOAR 463  | taken out |
|           |          |          | d         | sun glint | of STESM  |
|           |          |          | eployment |           | safestate |
|           |          |          | problem   | IBSL test | table     |
|           |          |          | TOAR 426  | performed |           |
|           |          |          |           | 12 Sept   | TOAR 462  |
|           |          |          | AMSU EMI  | 06        | sun glint |
|           |          |          | causing   |           |           |
|           |          |          | erratic   | Grating   |           |
|           |          |          | Behavior  | motor     |           |
|           |          |          | in PMT    | inve      |           |
|           |          |          | cathod,   | stigation |           |
|           |          |          | range 3   |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| *         |          |          | ON        | ON        | ON        |
| *SADPOS** |          |          |           |           |           |
|           |          |          | Enabled   | ENABLED   | Enabled   |
|           |          |          | M         |           |           |
|           |          |          | Factor50% | Timer =   | Timer =12 |
|           |          |          |           | 12mins    | mins      |
|           |          |          | Timer =   |           |           |
|           |          |          | 12 mins   |           |           |
+-----------+----------+----------+-----------+-----------+-----------+
| **        | Nominal  | TCE26 &  | Nominal   | TCE3H     | All TCE's |
| THERMAL** |          | 15H      |           | Batt 2A   | active    |
|           | TCE's    |          | TCE24 OFF | heater    |           |
| Heaters,  | back to  | Telem    | 4/14/05   | failed    | HIRS      |
| louvers   | nominal  | valid    |           | ON,       | filter    |
|           | confi    |          | (AVHRR    | turned    | heater    |
| TCE's     | guration | TOAR 432 | H&L)      | off       | turned    |
|           | f        | closed   |           | 8/26/03   | OFF       |
|           | ollowing |          | HIRS      |           | 9/28/06   |
|           | 7/25/04  | TC       | Filter    | AMSU-A1   |           |
|           | UVtrip.  | E24L&25L | heater    | survival  |           |
|           |          | (HIRS &  | turned    | heaters   |           |
|           |          | AVHRR)   | OFF       | on        |           |
|           |          | failed   | 1/18/05   | 10/29/03  |           |
|           |          | 5/13/98  |           |           |           |
|           |          |          |           |           |           |
|           |          | RCE      |           |           |           |
|           |          | th       |           |           |           |
|           |          | ermostat |           |           |           |
|           |          | failed   |           |           |           |
|           |          | 5/13/98  |           |           |           |
|           |          |          |           |           |           |
|           |          | Sp       |           |           |           |
|           |          | acecraft |           |           |           |
|           |          | in       |           |           |           |
|           |          | thermal  |           |           |           |
|           |          | uptrend  |           |           |           |
+-----------+----------+----------+-----------+-----------+-----------+

**COMMENTS/CHANGES:**

NOAA-12: There were relatively no changes to the rest of the NOAA-12
health situation during the past week. MSU power balance appears to
continue to hold stable at the motor\'s turn on temperature of 70 C.

NOAA-15: There were relatively no changes to the NOAA-15 health
situation during the past week.

NOAA-16: There was relatively no change in the performance of the
NOAA-16 payload subsystems during the past week and the rest of the
spacecraft subsystems were also nominal during this time.

The BVR Phase Controller switched from Primary to Back-up on 19 July
2007 at 18:11z. See Figures 1 & 2. There was no apparent cause for the
switch. There have been 2 other switches on NOAA-18 on 3/29/06 & 1/4/07,
but never one on NOAA-16. A TOAR is being submitted. The BVR Phase
Controller was commanded back to the primary side on 20 July 2007 @
20:12z. There has been no repeat of the switch.

NOAA-16 will be in full sunlight beginning in mid-September. This is the
first time ever it will not be eclipsing.

NOAA-17: There was relatively no change in the performance of the
NOAA-17 payload subsystems or health and safety during the past week.

HIRS channel 1 period monitor is looking a little noisy and brushing the
limit values. The limits are being analyzed to determine if they should
be backed off a few counts to allow for the spikes in telemetry this
point experiences on a regular basis. .

No updates or conclusion were reached about the Attitude disturbance
last week on 17 July 2007. The investigation will continue. .

NOAA-18: There were relatively no changes to the NOAA-18 health
situation during the past week.

AMSU-A1 motor 2 current spikes (around lower latitudes) magnitudes have
begun decreasing. It appears to have seasonal coupling. This is under
monitor for changes along with the related position reference count
points.

MetOp A: Here is a summary of the MetOp-A issues over the past week and
upcoming events as provided by Eumetsat engineers:

-   The ADCS and SARR analog telemetry showed a slight drop in
    temperature on July 20 -- 21, but recovered on July 22.  This
    temperature decrease is time correlated with the IASI Heater-Refuse
    anomaly that occurred on July 20 @ 04:30 UTC, but the ADCS and SARR
    units are accommodated on different panels than the IASI units and
    separated by the internal structure of the PLM.

-   The SEM DPU analog telemetry showed a significant drop in
    temperature (approx. 4 deg C) on July 20-21, but recovered on July
    22.  This temperature decrease is time correlated with the IASI
    Heater-Refuse anomaly that occurred on July 20 @ 04:30 UTC. 
    Although the SEM DPU is accommodated on a different panel than the
    IASI units, it is in the same internal compartment of the PLM
    structure and the drop in temperature seems explainable.

-   The AMSU instruments' Digital A telemetry showed a slight increase
    in temperature during the first half of the week and then a
    decreasing trend through the second half of the week.  This only
    amounted to 0.2-0.3 K and is not very significant.  The NEdT values
    are stable for all channels and well within specification.

-   The SARR analog telemetry showed a slight drop in temperature on
    July 20-21.  This temperature decrease is time correlated with the
    IASI Heater-Refuse anomaly that occurred on July 20 @ 04:30 UTC. 
    The SARR units are accommodated internally in the PLM in close
    proximity to the IASI units.

-   HIRS Filter Wheel resyncs have remained at the same rate as reported
    last week (approximately once every 92 seconds).

-   Investigation of the HRPT transmitter failure continues.

![](media/image4.jpeg){width="8.759722222222223in"
height="6.403472222222222in"}

**Figure 1 NOAA-16 Battery Voltage Regulator Phase Controller
(2007/199@23:27z-200@23:27z)**

# ![](media/image5.jpeg){width="8.891666666666667in" height="6.497222222222222in"}

Figure 2 NOAA-16 Battery Voltage Regulator Phase Controller (zoomed in
to anomaly time)