Fyra satelliter med AubieSat-1

AubieSat-1 Launch Includes Four Additional Satellites

AMSAT News Service Bulletin 296.05
From AMSAT HQ SILVER SPRING, MD.
October 23, 2011
To All RADIO AMATEURS
BID: $ANS-296.05

The launch of Auburn University’s AubieSat-1 satellite has been rescheduled to
28 October 2011 due to problems found during the system integration of the
primary mission. A hydraulic system leak was detected and the cause was found to
be a small crack in a hydraulic tube. A replacement tube was manufactured,
installed, and retested. Also, a flexible fabric collar connecting two engine
system exhaust ducts was found to be damaged following pressurized leak testing.
The damaged
fabric collar is being removed and replaced.

EXPENDABLE LAUNCH VEHICLE STATUS
Spacecraft: NPP (NPOESS Preparatory Project)
Launch Vehicle: Delta II 7920
Launch Site: Vandenberg Air Force Base, Calif.
Launch Date: Oct. 28, 2011
Launch Window: 2:48:01 a.m. – 2:57:11 a.m. PDT (9 min., 10 sec.)
Orbital Altitude: 512 miles
Note: This is the launch vehicle for AubieSat-1 and 4 other microsatellites

Satellite: AubieSat-1
Downlink Freq: 437.475 MHz
EIRP:  .708W
Modulation Scheme: Interrupted Continuous Wave (IWC)
Protocol: Morse Code
Baud Rate: 20wpm

Satellite: DICE
Downlink Freq: 465 MHz
EIRP: -4.51dBW
Modulation Scheme: OQPSK
Protocol: CCSDS
Baud Rate: Modulation data rate 1.5 megabit,
Actual Tx bit rate 3.0 megabit

Satellite: RAX-2
Downlink Freq: 437.345 MHz
Modulation Scheme: GMSK
Baud Rate: 9600

Satellite: M-Cubed (1)
Downlink Freq: 437.485MHz
EIRP: < 1W
Modulation Scheme: FSK
Protocol: AX.25
Baud Rate: 9600

Satellite: Explorer-1[PRIME] Flight Unit 2
Downlink Freq:  437.505 MHz
EIRP: -0.7dBW
Modulation Scheme: Non-Coherent FSK
Protocol: KISS Custom
Baud Rate: 1200

Additional spacecraft information can be found on the satellite
websites listed below:
M-Cubed:
http://umcubed.org/
DICE:
http://www.sdl.usu.edu/programs/dice
Explorer-1[PRIME]
http://ssel.montana.edu/e1p/
RAX-2:
http://rax.engin.umich.edu/
AubieSat-1:
http://space.auburn.edu/

AubieSat-1 is designed to transmit with a power of about 800 milliwatts on a
frequency of 437.475 MHz, plus or minus Doppler correction. The beacon signal,
along with telemetry, will be sent using A1A continuous wave Morse code at 20
words per minute. Additional telemetry from the on board science experiment will
use CW transmissions up to 60 WPM.

An internet Echolink conference group is also planned to begin one-half hour
prior to launch and continue until about 30 minutes after confirmation of the
first receipt of signals from the satellite. Information on the conference
groups title will be distributed nearer to the launch for interested stations.

Auburn’s famous battle cry, “War Eagle,” will be heard from space October 28
when it is transmitted to earth from a student-built satellite known as
“AubieSat-1.” Auburn University’s web page includes a video about their mission:
http://ocm.auburn.edu/featured_story/aubiesat.html

Long-time AMSAT Member John Klingelhoeffer, WB4LNM serves as the Technical
Advisor in Auburn University’s Student Space Program.

[ANS thanks the AubieSat-1 Team for the above information]