APRS

version 3 (11/Jan/2023)

Strore 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 page.

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 page.

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.

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"(TBD) messages to seasonal messages to thanking COVID-19's medical staff.