Frequencies
| Band | Frequency | Use | Modulation | TX power |
|---|---|---|---|---|
| VHF | 145.825 MHz | APRS | AFSK 1200 bps / AX.25 / 8K00F2D | 500 mW |
| UHF | 437.375 MHz | CW beacon | CW / 500HA1A | 100 mW |
| UHF | 437.375 MHz | Downlink of HK, images and APRS logs | GMSK 4800 bps / AX.25 / 8K50F1D | 800 mW |
The callsign is JS1YMX Shared with KASHIWA; the satellite name at the start of the beacon tells them apart
CW beacon
Format: YOMOGI JS1YMX <RSSI> <10 hex digits>
The 10 hex digits are 40 bit of HK; the format identifier at bit 25 switches the contents
Bit assignment and conversion formulas are on the CW decoder page
GMSK HK downlink
HK packets start with 33 33
They carry time since reset, temperatures of 7 faces, SAP voltage and current of 5 faces, battery voltage, current and temperature, bus current and RESET_SW
The GMSK HK analyzer converts hex logs into physical values