Information for Radio Amateurs
This page is dedicated to the amateur radio community and lists information related to our SONATE-2 mission. Activation of our amateur radio payloads (SSTV, APRS Digipeater) will usually be announced on our BlueSky account @jmuspace.sky.social.
Please contact sonate-2@uni-wuerzburg.de for any questions regarding SONATE-2 amateur radio operations.
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: 03.12.2025]
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 BlueSky account @jmuspace.sky.social
Würzburg, 03.12.2025 – The APRS digipeater is deactivated between 05. - 08.12.2025 due to a SSTV event (see below).
| Begin [UTC] | End [UTC] |
| 10.03.2025 11:45 | 18.04.2025 15:30 |
| 21.04.2025 09:00 | --- |
Past Transmission Periods
Total Number of transmissions: 44 365 [Last Update: 01.02.2026]
| 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 | 28.10.2024 00:00 | 156:35 | 703 |  |
| 28.10.2024 00:00 | 01.11.2024 15:30 | 111:30 | 397 |  |
| 04.11.2024 11:30 | 11.11.2024 00:00 | 156:30 | 463 |  |
| 11.11.2024 00:00 | 15.11.2024 15:30 | 111:30 | 397 |  |
| 18.11.2024 11:00 | 25.11.2024 00:00 | 157:00 | 343 |  |
| 25.11.2024 00:00 | 29.11.2024 15:00 | 111:00 | 201 |  |
| 02.12.2024 11:05 | 09.12.2024 00:00 | 156:55 | 465 |  |
| 09.12.2024 00:00 | 13.12.2024 15:00 | 111:00 | 226 |  |
| 16.12.2024 11:00 | 23.12.2024 00:00 | 157:00 | 410 |  |
| 23.12.2024 00:00 | 30.12.2024 00:00 | 168:00 | 367 |  |
| 30.12.2024 00:00 | 06.01.2025 00:00 | 168:00 | 558 |  |
| 06.01.2025 00:00 | 13.01.2025 00:00 | 168:00 | 324 |  |
| 13.01.2025 00:00 | 20.01.2025 00:00 | 168:00 | 407 |  |
| 20.01.2025 00:00 | 27.01.2025 00:00 | 168:00 | 500 |  |
| 27.01.2025 00:00 | 03.02.2025 00:00 | 168:00 | 525 |  |
| 03.02.2025 00:00 | 07.02.2025 15:00 | 111:00 | 320 |  |
| 10.02.2025 15:00 | 14.02.2025 15:00 | 96:00 | 396 |  |
| 17.02.2025 12:00 | 24.02.2025 00:00 | 156:00 | 467 |  |
| 24.02.2025 00:00 | 03.03.2025 00:00 | 168:00 | 664 |  |
| 03.03.2025 00:00 | 07.03.2025 15:45 | 111:45 | 413 |  |
| 01.04.2025 00:00 | 30.00.2025 23:59 | 720 | 1400 |  |
| 01.05.2025 00:00 | 31.05.2025 23:59 | 744 | 2434 |  |
| 01.06.2025 00:00 | 30.06.2025 23:59 | 720 | 2348 |  |
| 01.07.2025 00:00 | 31.07.2025 23:59 | 744 | 3063 |  |
| 01.08.2025 00:00 | 31.08.2025 23:59 | 744 | 2828 |  |
| 01.09.2025 00:00 | 30.09.2025 23:59 | 720 | 4232 |  |
| 01.10.2025 00:00 | 31.10.2025 23:59 | 744 | 4225 |  |
| 01.11.2025 00:00 | 30.11.2025 23:59 | 720 | 3216 |  |
| 01.12.2025 00:00 | 31.12.2025 23:59 | 744 | 2448 |  |
| 01.01.2026 00:00 | 31.01.2025 23:59 | 744 | 3117 |  |
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.
- Frequency: 145.880 MHz
- Modulation: Martin M1 SSTV FM (F3F)
- TX Power: 500mW
Transmission Schedule from 04.03.2026 – 05.03.2026 in UTC [Last Update: 03.03.2026]
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 BlueSky account @jmuspace.sky.social.
Würzburg, 03.03.2026 – To celebrate SONATE-2's second birthday, we will once again activate our SSTV transmitter. There will be further opportunities this coming weekend. The APRS digipeater is switched off during the entire planned SSTV event period.
| 04.03.2026 | 05.03.2026 |
| 12:00 – 15:59 UTC | |
| 12:27:49 UTC 12:29:59 UTC 12:35:49 UTC 12:37:59 UTC 12:43:49 UTC 12:45:59 UTC 12:51:49 UTC 12:53:59 UTC 12:59:49 UTC 13:01:59 UTC 13:07:49 UTC 13:09:59 UTC 14:00:43 UTC 14:02:53 UTC 14:08:43 UTC 14:10:53 UTC 14:16:43 UTC 14:18:53 UTC 14:24:43 UTC 14:26:53 UTC 14:32:43 UTC 14:34:53 UTC 14:40:43 UTC 14:42:53 UTC | |
| 04.03.2026 | 05.03.2026 |
| 16:00 – 19:59 UTC | |
| 17:06:32 UTC 17:08:42 UTC 17:14:32 UTC 17:16:42 UTC 17:22:32 UTC 17:24:42 UTC 17:30:32 UTC 17:32:42 UTC 17:38:32 UTC 17:40:42 UTC 17:46:32 UTC 17:48:42 UTC 18:39:26 UTC 18:41:36 UTC 18:47:26 UTC 18:49:36 UTC 18:55:26 UTC 18:57:36 UTC 19:03:26 UTC 19:05:36 UTC 19:11:26 UTC 19:13:36 UTC 19:19:26 UTC 19:21:36 UTC | |
| 04.03.2026 | 05.03.2026 |
| 20:00 – 23:59 UTC | |
| 23:18:08 UTC 23:20:18 UTC 23:26:08 UTC 23:28:18 UTC 23:34:08 UTC 23:36:18 UTC 23:42:08 UTC 23:44:18 UTC 23:50:08 UTC 23:52:18 UTC 23:58:08 UTC | |
| 04.03.2026 | 05.03.2026 |
| 00:00 – 03:59 UTC | |
| 00:00:18 UTC 02:23:56 UTC 02:26:06 UTC 02:31:56 UTC 02:34:06 UTC 02:39:56 UTC 02:42:06 UTC 02:47:56 UTC 02:50:06 UTC 02:55:56 UTC 02:58:06 UTC 03:03:56 UTC 03:06:06 UTC | |
| 04.03.2026 | 05.03.2026 |
| 04:00 – 07:59 UTC | |
| 05:29:45 UTC 05:31:55 UTC 05:37:45 UTC 05:39:55 UTC 05:45:45 UTC 05:47:55 UTC 05:53:45 UTC 05:55:55 UTC 06:01:45 UTC 06:03:55 UTC 06:09:45 UTC 06:11:55 UTC | |
| 04.03.2026 | 05.03.2026 |
| 08:00 – 11:59 UTC | |
| 10:08:27 UTC 10:10:37 UTC 10:16:27 UTC 10:18:37 UTC 10:24:27 UTC 10:26:37 UTC 10:32:27 UTC 10:34:37 UTC 10:40:27 UTC 10:42:37 UTC 10:48:27 UTC 10:50:37 UTC | |
Planned Transmissions [Last Update: 03.03.2026]
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 BlueSky account @jmuspace.sky.social.
| Planned Period |
| 04.03 – 05.03.2026 |
| 06.03 – 08.03.2026 |
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, UT, USA |   |
| 01.11.24 – 04.11.24 | New York, USA and Cape Town, South Africa |   |
| 15.11.24 – 18.11.24 | San Francisco, CA, USA and Key West, FL, USA |   |
| 29.11.24 – 02.12.24 | Maasvlakte Rotterdam, Netherlands and Korean Peninsula |   |
| 13.12.24 – 16.12.24 | Graham Land, Antarctica and Dalhart, TX, USA |   |
| 14.02.25 – 17.02.25 | Nile Delta, Egypt and Spencer Gulf, Australia |   |
| 07.03.25 – 10.03.25 | Los Angeles, CA, USA and Rio de la Plata |   |
| 18.04.25 – 21.04.25 | Sylt, Germany and Patagonia, Argentina |   |
| 05.12.25 – 08.12.25 | Würzburg, Germany and Schweinfurt, Germany | |
