Two new satellites carrying several amateur radio focused payloads are now in orbit.
SONATE-2 originates from Julius-Maximilians-Universität in Germany and features an APRS digipeater. 421 messages were digipeated this past weekend. The satellite also features a VHF transceiver with SSTV downlink sending images captured by onboard cameras.
SSTV downlink
Regular downlink of images captured by the on-board cameras
Frequency: 145.880 MHz
Modulation: Martin M1 SSTV FM (F3F)
TX Power: 500mW
APRS digipeater
APRS digipeater in half-duplex operation. Digipeater is only active when published at https://x.com/JMUSpace. When activated, it will transmit a greeting message every 2 minutes
Make sure to include SONATE-2 callsign DPØSNX in the APRS route
Frequency: 145.825 MHz Up/Down
Modulation: 1k2 AFSK (F2D)
Protocol: AX.25
TX Power: 500mW
ROBUSTA-3A, a 3U CubeSat built by students at Université de Montpellier in southern France, carries a 9k6 GMSK AX.25 store-and-forward digital system. The UHF transmitter features a powerful 3 watt downlink. Procedures and uplink frequency will be published soon. In the meantime, short telemetry bursts can be heard on its downlink frequency of 436.750 MHz.
Source: AMSAT
