last update
21:55 UTC
SFI: 74 | Ap index:  36  | Kp index:  4  ( n\a @--:--,  n\a @--:--)| X-ray flux:  n\a 
SW: Density= 2.7 p/cm3 | Speed= 575.7 km/s | Temp=179(x1000)K
IMF: Bx=-4.4nT | By=-3.1nT | Bz= -0.1 nT | Bt= 5.4 nT | Lat= -1.3 ° | Lon=215.4°
Sunspots: 0 | Area: 0 10-6/Hemi | New regions: 0
[i]X-ray flares: C=0 M=0 X=0 | Optical flares: M1=0 M2=0 M3=0 | Sub-flares=0
On Saturday, September 17, during an uplink array, which consisted of three 34m stations (DSS-24, 25, & 26) which provided an estimated 10.4 dB gain at the spacecraft over a standalone 34m uplink at 20 kW, 360 commands were sent for configuring the spacecraft for a low power mode by powering off excess loads, powering on all power switching boards, and ensuring the reaction wheels are powered off in a known configuration. On Sunday, September 18, during a 2nd uplink array with 70m station DSS-43 monitoring the downlink, during 2 brief TWTA sampling periods, the carrier signal was received on time with a continuously fluctuating signal of -170 dBm to -178 dBm with a period of ~45 seconds. Subcarrier lock was intermittent. While the uplink can support short critical commands, the downlink cannot support telemetry. The radio science receiver team reported a modulated downlink. As the SNR was not stable long enough for post-pass telemetry extraction, the LGA was swapped to the -Z LGA to improve SNR. This improved the carrier level by ~3 dB, with levels of -167 dBm to -174 dBm. Two telemetry frames were received. While the battery pressure was good, the temperature needs to be reduced. Daily two hour 70 m supports have been requested to prevent further battery functional degradation.

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