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[jamsat-news:2946] ANS-098 ANS Special Bulletin - ARISSat-1 Activation AboardISS Begins April 11

SB SAT @ AMSAT $ANS-098.01
ANS Special Bulletin ARISSat-1 Activation Aboard ISS Begins April 11

AMSAT News Service Bulletin 098.01
April 8, 2011
BID: $ANS-098.01

SILVER SPRING, MARYLAND (AMSAT News Service) While awaiting 
deployment from the International Space Station (ISS) in late 
July, an amateur radio satellite specifically designed to in-
terest students in scientific and technological careers will 
be activated and begin transmissions from the ISS in mid-April 
of this year. 

Transmissions are scheduled to begin Monday around  14:30 UTC 
April 11 and ending Wednesday around 10:30 UTC on April 13. 
Electronic certificates of the event will be available to those 
summitting reception reports to: Gagarin@arissat1.org.

These transmissions will commemorate 50 years since the flight 
of Russian Cosmonaut Yuri Gagarin as the first human to enter 
outer space. The satellite (called ARISSat-1, RadioSkaf-V) will 
send telemetry, SSTV images, and messages of goodwill as it 
orbits earth inside the ISS. 

ARISSat-1 is a cooperative effort between AMSAT, ARISS (Amateur 
Radio on the International Space Station,) RSC-Energia (The Russian 
Space Agency) and NASA. The design, development and construction 
of the satellite was done by AMSAT volunteers. Original plans call-
ed for the satellite to be housed inside an old Russian spacesuit. 
But when the suit became unavailable, a spaceframe was developed 
to house the radio equipment and solar panels. The new satellite 
was named ARISSat-1. Other names for the spacecraft are RadioSkaf-V 
and Kedr. The transmitted callsign will be RS01S.

In order to operate inside the ISS, ARISSat-1 will be connected to 
an external amateur radio antenna already mounted on the outer sur-
face of the space station. The craft will use its own battery for 
operation, therefore it will be in low power mode. As a result, 
listeners can expect 40-60 second "ON" periods followed by two-minute 
"OFF" periods to save battery power. 

To listen for ARISSat-1 voice signals during this special event, FM 
receivers should be tuned to 145.950 MHz.  Specific only to this event, 
planning is currently underway to provide an additional FM broadcast 
downlink at 437.550 MHz. Even though the satellite will only have an 
output of 250 mW on 2 meters, a standard FM handy talkie equipped with 
a quarter-wave whip antenna should be able to receive the voice ID, 
voice telemetry and greeting messages as the craft passes overhead. 
SSTV transmissions may also be demodulated and viewed using a free 
downloadable program such as MMSSTV that is available at:  
For Mac users, Multiscan2 is available at: 

Those planning to monitor voice broadcasts from ARISSat-1 are request-
ed to make note of the telemetry battery voltage values and UTC time, 
and then submit their records to Gagarin@arissat1.org. Digital tele-
metry will be sent at 145.920 MHz. Given the low duty cycle of the 
spacecraft, those planning to receive the digital telemetry are en-
couraged to record the entire signal band using the FunCube dongle 
or SDR-IQ receivers.

Software for demodulating the BPSK-1000 telemetry is available at:
A software user guide will be available soon.

This special period of operation is only expected to continue during 
the two-day 50 year commemoration of Gagarin's famous mission.   

The actual deployment of ARISSat-1, first announced for February 2011, 
is now expected to take place during an EVA scheduled for late July, 
2011. After it is deployed from the International Space Station, 
ARISSat-1 is expected to be in orbit for a period of up to six months.

More information on the transmission schedule and overall mission of 
ARISSat-1 can be found at:

ARISSat-1 Web site:	http://www.arissat1.org 

AMSAT Web site:		http://www.amsat.org 

ARISS  Web site:	      http://www.ariss.org 

ARISS Facebook Page:	Amateur Radio on the ISS (ARISS)
ARISS Twitter site:	@ARISS_status

The Radio Amateur Satellite Corporation (AMSAT) is a non-profit, 
volunteer organization which designs, builds and operates experi-
mental amateur radio satellites and promotes space education. We 
work in partnership with government, industry, educational instit-
utions and fellow amateur radio societies. We encourage technical 
and scientific innovation, and promote the training and development 
of skilled satellite and ground system designers and operators. Our 
vision is to deploy satellite systems with the goal of providing 
wide area and continuous coverage for amateur radio operators world-
wide. AMSAT is also an active participant in human space missions 
and supports satellites developed in cooperation with the educational 
community and other amateur satellite groups.

Amateur Radio on the International Space Station (ARISS) is a volun-
teer program which inspires students, worldwide, to pursue careers 
in science, technology, engineering and math through amateur radio 
communications opportunities with the International Space Station 
on-orbit crew. Students learn about life on board the ISS and explore 
Earth from space through science and math activities. ARISS provides 
opportunities for the school community (students, teachers, families 
and local residents) to become more aware of the substantial benefits 
of human space flight and the exploration and discovery that occur on 
space flight journeys along with learning about technology and amateur 

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


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