In the microsatellite Ten-Koh2, developed by our laboratory, we plan to operation of the linear transponder as well as a demonstration of microwave-band communication technology. We will provide updates on these amateur radio services in due course.
※“Ten-koh2” is scheduled to be deployed from the JAXA H-II Transfer Vehicle-X (HTV-X) via the H-SSOD. The specific date for the start of operations will be announced separately at a later time, so we kindly ask for your patience.
Request for Reception Reports for “Ten-koh2”
For “Ten-koh2” (JS1YKI), we would greatly appreciate your cooperation in submitting reception reports via the form below.
Nihon University, College of Science and Technology — Okuyama Laboratory
Nanosatellite “Ten-koh2” (JS1YKI) Reception Report Form
Please note: We have received reports that the form may not display correctly when accessed using a Nihon University Google account (nihon-u.ac.jp). We apologize for the inconvenience; if this occurs, please use a different account.
| Call sign | JS1YKI |
| Downlink frequency (CW) | ４３５．８６０MHz |
| Downlink frequency (AFSK 1.2 kbps / GMSK 9.6 kbps) | ４３５．８６０MHz |
| Digitalker | ４３５．８６０MHz |
| Downlink frequency (GMSK 4.8 kbps / GMSK 9.6 kbps / GMSK 19.2 kbps) | ４３５．８９５MHz |
| Downlink frequency (4FSK 38.4 kbps) | ４３５．８９５MHz |
| Linear transponder (uplink: 145 MHz LSB / downlink: 435 MHz USB) | １４５．８９５～１４５．９３５MHz ４３５．８７５～４３５．９１５MHz |
| Mission frequency (5.8 GHz CW) | ５．８３９GHz |
Please also refer to the external website below for more information.
Announcement: Telemetry Format Release (2026-02-23)
We are pleased to announce the release of the telemetry format for “Ten-koh2” (JS1YKI).