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
I mis-titled the parent email, indicating that the telem was collected at 15:19Z. It was, in fact, 05:15Z; and in my experience it is only these early passes during which FO-29 is being activated by the control team.
I hope that by collecting this telemetry, I can help that team make an informed decision about allowing the bird to be activated at other times, especially the passes which better suit the daily schedule of eastern NA and Europe.
73, Bruce VE9QRP
Hi Bruce,
tks for info. I was also wondering about it, as the JARL did not publish any new schedule for FO-29 after August, 27. As you correctly pointed-out, FO-29 is being activated only during early passes, so its very-very interesting your report @15:19 Z !!!
However, the question remains:
FO-29 was QRV after eclipse "by self" ? If yes, that is a GREAT News.
Looking forward for JARL's answer.
73, Mak SV1BSX
----- Original Message ----- From: "Bruce Robertson" broberts@mta.ca To: amsat-bb@amsat.org Sent: Sunday, September 02, 2007 04:01 Subject: [amsat-bb] Re: FO-29 CW telem 2007-09-01 05:19Z
I mis-titled the parent email, indicating that the telem was collected at 15:19Z. It was, in fact, 05:15Z; and in my experience it is only these early passes during which FO-29 is being activated by the control team.
I hope that by collecting this telemetry, I can help that team make an informed decision about allowing the bird to be activated at other times, especially the passes which better suit the daily schedule of eastern NA and Europe.
73, Bruce VE9QRP _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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SV1BSX