last update
08:35 UTC
SFI: 82 | Ap index:  5  | Kp index:  1  ( 0 @09:15,  0 @12:15)| X-ray flux:  A7.9 
SW: Density= 2.1 p/cm3 | Speed= 411.1 km/s | Temp=61(x1000)K
IMF: Bx=-0.7nT | By=1.1nT | Bz= 0.6 nT | Bt= 1.4 nT | Lat= 24.8 ° | Lon=120.5°
Sunspots: 54 | Area: 180 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.

Render: 0.0186s, 0.0034 for queries.

Powered by a penguin
Protected by a devil