The 65th anniversary of the first human space flight by cosmonaut Yuri Gagarin, the 45th anniversary of the first Space Shuttle flight and the 100th anniversary of the world's first liquid-propelled rocket launch by Robert Goddard. These are three of several space achievements being commemorated by Amateur Radio on the International Space Station through its selection of images to be transmitted as part of SSTV Series 31. The SSTV Mode will be Robot 36 and there will be two minutes between transmissions. Transmissions will begin on the 10th of April and continue through to the 14th of April. The frequency will be 437.55, plus or minus Doppler shift.
