SiriusSat-1 (RS13S) and SiriusSat-2 (RS14S) CubeSats
It is planned that two Russian CubeSats will be deployed from the International Space Station in August during a spacewalk (EVA).
SiriusSat-1 (SXC1-181) call sign RS13S beacon 435.570 MHz
SiriusSat-2 (SXC1-182) call sign RS14S beacon 435.670 MHz
The satellites are at RSC Energia, where they are undergoing additional checks before being sent to the International Space Station. A launch is planned for July 10 on a Progress cargo vehicle to the ISS with deployment in August during a spacewalk.
Sputnix Facebook post https://www.facebook.com/Sputnixru/posts/1589717307807600