I found Tanusha-SWSU-1/2 (RS-6S/7S) info on Southwest Stage University web site. http://eng.swsu.ru/space
Both downlink frequency is 437.05MHz. They transmit messages and telemetry. Telemetry is 9600bps AX.25. Telemetry format is on the web site.
Deployment from ISS is still set Russian spacewalk at 17th Aug.
Masa JN1GKZ Tokyo Japan