[amsat-bb] FO-29 CW telem 2007-09-01 15:19Z

[Bruce Robertson]

I found the bird much louder last night than the night before, when I was
unable to copy telem.  On that occasion, the beacon power might have been
compressed by rogue FM signals on the transponder.


I assume that since the tx power is stated as around 0.8W, the beacon is
running 80mW, about the same as some cubesats. 


HI HI 22 E2 88 D5 8F BB 05 25 00 24 00 00 6F 65 9A 9D B0 80 B7 B6 B7 B5 BA
HI HI 22 2E 88 D5 8F BB 05 25 00 24 00 00 6F 65 9A 9D B1 91 B7 B6 B6 B4 BA
HI HI 22 E2 88 D5 8F BB 05 25 00 24 00 00 6E 65 9A 9D B0 88 B7 B6 B6 B5 BA 
HI HI 22 E2 88 D5 8F BB 05 25 00 24 00 00 6C 65 9A 9D B0 80 B7 B6 B6 B4 B9

DATA 1
Main Relay        ON    :  DCM               ON
  SRAM              OFF   :  Packet            OFF
  JTA               ON    :  JTD               OFF
  GAS               OFF   :  
  SAS               OFF   :  UVC               ON
  UVC Level         1     :  PCU Mode          AUTO
  PCU Level         3     :  Battery Mode      TRIC
  Battery Logic     TRIC  :  
  Digitalker Mode   OFF   :  UVC ACT/PAS       PAS
  CPU RUN/RESET     RUN   :  
  Spin Period                 8356.0 [msec]
  Sun Angle                     72.5 [deg]
  GAS-Z                          0.0 [nT]
  GAS-X                          0.0 [nT]
  Solar Panel Current         1088.2 [mA]
  Battery Current              -20.4 [mA]
  Battery Voltage               16.6 [V]
  Battery Middle Voltage         7.6 [V]
  Bus Voltage                   17.3 [V]
  Analog Tx Power              733.9 [mW]
  Structure Temp. 1             10.8 [C]
  Structure Temp. 2             11.2 [C]
  Structure Temp. 3             10.8 [C]
  Structure Temp. 4             11.6 [C]
  Battery Cell Temp.             9.6 [C]


It is interesting to see the solar panel current decrease as the bird moves
toward eclipse. (I assume since this is a sphere that these changes
represent represent real alterations in irradiation, not the effects of
tumble, but I'd be happy to be corrected on this point.)

Solar Panel Current (# 50mA)

 ( Data 1 )  1088.2[mA] : ######################
 ( Data 2 )  1088.2[mA] : ######################
 ( Data 3 )  1078.4[mA] : ######################
 ( Data 4 )  1058.8[mA] : #####################

Unfortunately, I decided to see if anyone was active on the transponder and
missed the frames of telemetry that came during and after eclipse.

Thanks to JE9PEL, Mineo, for his excellent telemetry analysis program. 

73, Bruce
VE9QRP