Sorry Robert, I assumed you had web access.   The following is from the IARU frequency coordination page.   Note that the earth observation mission is not using amateur frequencies.

Z-sat is a 50kg microsat with two missions:

 1) Mission: BBS service Exchanging messages between amateurs all over the world in amateur service. Any amateur can use the space station like a BBS by uploading and downloading messages. The specific steps includes: An amateur radio station transmits messages to the space station for individual/public and these messages are stored in the space station. Another amateur radio station transmits a specific message to the space station and the space station transmits a reply message whether any message to him exists or not. If exists, the amateur radio station can receive the message by transmitting a specific message to the space station. Frequency band: - UPLINK : 435-438 MHz - DOWNLINK : 145-146 MHz (Note:The usage of the BBS is shown in the following URL. (same as ChubuSat-2 except frequencies) https://www.frontier.phys.nagoya-u.ac.jp/en/chubusat/chubusat_satellite2.html

[Non-Amateur Mission] using frequencies outside the amateur satellite service spectrum
(2) Mission: The Earth observation Imaging particular site with the infrared camera. Frequency band: - UPLINK : S-band - DOWNLINK : S-band No launch defined but planning a sun synchronous LEO. **BBS downlink has been coordinated on 145.875 MHz and for the BBS uplink 435.480 MHz**


de KM1P Joe