Mission Contents
This satellite will use the
APRS Mission
Camera Mission
The goal is to accomplish two types of missions
Table of Contents
1. APRS Mission
1-1: Store and Forward
At 145.825 MHz, sending APRS queries from the satellite to a specific amateur station with APRS capability, and store the responses.
The response data is transmitted from the satellite to the ground station by UHF downlink.
The APRS response packets downlinked to the ground station will be published on this website .
1-2: Response to queries from ground stations and collection of log data
When the satellite receives an APRS query from a ground amateur station, it returns an ACK signal.
The satellite logs the call sign and reception time of the received query from an amateur station, and log data is transmitted from the satellite to the ground station by UHF downlink.
The log downlinked to the ground station will be published on this website .
1-3: Satellite Digipeater Operation
Provides message relay service to the amateur radio community.
The APRS digipeaters on board YOMOGI use 145.825 MHz, the defacto standard frequency used by amateur satellites, for both receiving and transmitting signals.
1-4: APRS beacon operation
The APRS beacon with APRS message uplinked from the ground station will be transmitted from the satellite.
APRS messages will range from "hello" messages to seasonal messages to thanking Covid-19's medical staff.
2. Camera Mission
Mission Outline
Capture images of the Earth's surface using two types of cameras (band-pass and RGB) (the maximum image file size will be 0.8 Mbytes for thumbnails and 4 Mbytes for full-size images).
Image data from the two types of cameras will be stored in flash memory.
The image data will be divided and transmitted to the ground station by UHF downlink, then received and restored at the ground station.