ARISSat-1 to Celebrate Gagarin Anniversary

AMSAT News Service Bulletin 100.01
April 10, 2011
BID: $ANS-100.01

ARISSat-1 to Help Celebrate Gagarin Flight Anniversary

ARISSat-1 transmissions from the ISS will be used to help celebrate man’s 50th year in space. Yuri Gagarin became the first man in space on 12 April 1961. Fifty years later on 12 April 2011 the Russians will have a nationwide commemoration of this historic event. The ARISSat-1/RadioSkaf-V satellite on board the ISS and awaiting deployment in late July of 2011 will be turned on and transmit during the celebration period. The transmissions will begin on Monday 11 April 2011 at 14:30 UTC and continue until 10:30 UTC on 13 April 2011.

Due to the fact that the solar panels are covered, the satellite will be powered only by the onboard battery. The satellite will run in low power mode. This means that the transmissions will cycle ON/OFF. They will be On for 40-60 seconds and Off for 2 minutes. The FM transmissions on 145.95 MHz will contain an ID for the satellite, call sign RS01S, international greeting messages, spoken telemetry values and SSTV images. There will also be CW transmitted on 145.919 MHz and SSB BPSK-1000 telemetry data on 145.920 MHz. ARISSatTLM software can be used with a computer soundcard to tune, receive, demodulate, decode and display the telemetry values if tuned correctly. The transponder will not be active during this event.

AMSAT will issue commemorative certificates to those receiving the transmissions and sending an email to or with your name or group, a description of what you heard and the UTC time you heard it. Recording the Battery voltage values and the UTC time you received them will beĀ  especially helpful.
One of the messages will be a conversation between Yuri Gagarin and ground control. The ARISS team is working to get the D-700 aboard the ISS to also transmit the FM signals on 437.550 MHz.

[ANS thanks Gould, WA4SXM, for the above information]