Information for Radio Amateurs

Two Line Elements (TLE)

The NORAD-ID of SONATE-2 is 59112 and its international designator is 2024-043Q. Current TLE information can be found on the CelesTrak website.

Telemetry Downlink

During passes over our ground stations in Germany the telemetry downlink of SONATE-2 will be activated.

• Frequency: 437.025 MHz
• Modulation: 9k6 G3RUH GMSK (F1D)
• Protocol: AX.25

The protocol format used for encoding the telemetry frames can be found >>here<<.
Recorded AX.25 frames can be forwarded to sonate-2@uni-wuerzburg.de

CW Beacon

SONATE-2's CW Beacon is only sporadically used mainly during LEOP for launch object identification. If activated, a beacon with the callsign of the satellite DP0SNX is transmitted at regular intervals as CW Morse code.

• Frequency: 145.840 MHz
• Modulation: Morse code CW (A1A)
• Interval: 30 sec

APRS Digipeater

The APRS digipeater on SONATE-2 operates in half-duplex operation. The digipeater is only active when published below. When activated, it will transmit a greeting message every 2 minutes. Make sure to include SONATE-2's callsign DP0SNX in the APRS route.

• Frequency: 145.825 MHz Up/Down
• Modulation: 1k2 AFSK (F2D)
• Protocol: AX.25
• TX Power: 500mW

Planned Activation Schedule [Last Update: 21/10/2024]

The activation of the APRS digipeater on SONATE-2 is planned at the following times. Due to unforeseen circumstances, the planned times can also change at short notice. The begin of an APRS event is usually announced on our X account @JMUSpace.

Würzburg, 07.10.2024 – The APRS digipeater has successfully operated for the first time continuously for a week. No problems were encountered. We will therefore continue to operate the APRS digipeater until further notice. However, interruptions are always possible due to unforeseen circumstances.

Würzburg, 14.10.2024 – We are planning SSTV broadcasts again over the weekend. Therefore the APRS digipeater will be deactivated during the entire event period.

Past Transmission Periods

Begin [UTC]	End [UTC]	Duration  [h]	Digipeated Message Count	Worldmap
26/07/2024 16:00	29/07/2024 00:00	56:00	421
09/08/2024 15:00	11/08/2024 23:00	56:00	486
14/08/2024 15:00	18/08/2024 23:00	104:00	833
23/08/2024 15:00	25/08/2024 23:00	56:00	289
13/09/2024 15:20	15/09/2024 23:20	56:00	539
20/09/2024 15:40	22/09/2024 23:40	56:00	632
30/09/2024 15:30	07/10/2024 00:00	152:30	834
07/10/2024 00:00	14/10/2024 00:00	168:00	576
14/10/2024 00:00	18/10/2024 15:45	111:45	406
21/10/2024 11:25

SSTV Downlink

Regular downlinks of SSTV images captured by SONATE-2's on-board cameras are planned. The SSTV downlinks are only active during the times when published below. Only a single images is transmitted at the specified timestamps (all in UTC).

• Frequency: 145.880 MHz
• Modulation: Martin M1 SSTV FM (F3F)
• TX Power: 500mW

Transmission Schedule from 18/10/2024 – 21/10/2024 in UTC [Last Update: 18/10/2024]

The following table shows the UTC times of the planned SSTV transmissions of SONATE-2. Two images are transmitted sequentially at these times. Due to unforeseen circumstances, the scheduled times may change at short notice. The begin of a SSTV event is usually also announced on our X account @JMUSpace.

Würzburg, 18.10.2024 – The APRS digipeater is switched off during the entire planned SSTV event period.

Planned Transmissions [Last Update: 23/10/2024]

The following table shows the times for future planned SSTV transmissions of SONATE-2. Due to unforeseen circumstances, the scheduled times may change at short notice. The begin of a SSTV event is usually also announced on our X account @JMUSpace.

Past Transmissions

The following table shows the past transmissions of SONATE-2's SSTV transmitter and the regions of the transmitted images.

Transmission Period	Image Content	Images
08/03/24 – 11/03/24	SONATE-2
26/03/24 – 02/04/24	French Atlantik Coast
17/05/24 – 21/05/24	Strait of Gibraltar
21/06/24 – 24/06/24	Durrat Al Bahrain
05/07/24 – 08/07/24	Hurricane Beryl
02/08/24 – 05/08/24	Dubai and Italy
31/08/24 – 02/09/24	Honshū, Japan
27/09/24 – 30/09/24	Persian Gulf and Karkheh Dam, Iran
18/10/24 – 21/10/24	Tasmania, Australia and Great Salt Lake, Utah