SamSat-218 lead developer Efim Ustiugov with Professor Igor Belokonov

Two Russian satellites AIST-2D and SamSat-218D operating in the Amateur bands were launched on April 28, 2016 at 02:01 UT on a Soyuz 2-1A launch vehicle from the new Vostochny Cosmodrome located in the Amur Oblast. The satellites were placed into a  471 km × 485 km orbit with a 97.3° inclination.

AIST-2D weighs 500 kg and is a technology demonstration and scientific research satellite developed at Samara Aerospace University. The 3U CubeSat SamSat-218 was developed by students at the Samara State University and weighs just 4 kg.

AIST-2D – Credit TsSKB Progress

Frequency information from Dmitry R4UAB http://r4uab.ru/?p=11842
AIST-2D / RS-48 Downlinks
• 435.3065 – 435.3235 MHz Telemetry Data
• 435.3565 – 435.3735 MHz Telemetry Data
• 433 – 438 MHz 200 watt Synthetic Aperture Radar (SAR)
• 8025 – 8393 MHz Remote Sensing Data
AIST-2D / RS-48 Uplinks
• 145.831 – 145.849 MHz Control Link
• 145.861 – 145.879 MHz Control Link

AIST-2D http://spaceflight101.com/soyuz-lomonosov/aist-2d/

SamSat-218D
• 145.870 MHz Morse CW beacon transmits “SamSat-218D” every 150 seconds (or 30 seconds)
• 145.850 – 145.890 MHz TRXSSAU downlink
• 435.590 – 435.610 MHz TRXSSAU uplink

SamSat-218 http://spaceflight101.com/soyuz-lomonosov/samsat-218d/

Russian post on SamSat-218D http://zelenyikot.livejournal.com/94190.html
Google English translation https://translate.google.com/translate?hl=en&sl=auto&tl=en&u=http%3A%2F%2Fzelenyikot.livejournal.com%2F94190.html&sandbox=1

432-438 MHz was allocated to the Earth Exploration Satellite Service (Active) at WRC-03  https://www.itu.int/dms_pubrec/itu-r/rec/sa/R-REC-SA.1260-1-200305-S!!PDF-E.pdf

September 2003 issue of QST magazine has an article on page 44 by VE3PU on satellite-based Synthetic Aperture Radar (SAR) in 432-438 MHz (ARRL members only)
http://p1k.arrl.org/pubs_archive/104721