no
location

Welcome

User Guide

A User Guide for the tracker is available here.
Check the SondeHub-Tracker Changelog to find info on recent updates.

Radiosondes?

To learn more check out our LCA video.
You can set up a receiver station using auto_rx or rdzTTGOsonde.

Found a Radiosonde?

Please click the 'balloon' icon on the top-right to submit a recovery notification!

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We gratefully thank our major supporters:
  

Contact Us!

For SondeHub usage questions and support, feel free to email us at support@sondehub.org.
You can also find us on Discord and on IRC in #habhub at libera.chat.

Amateur HAB Launches?

You can find Amateur High-Altitude Balloon launches on the Sondehub-Amateur Tracker.

SondeHub Status Pages

This site uses data from the SondeHub database.
You can find the status of the SondeHub Database on the SondeHub Dashboard.
You can view outages of the SondeHub Database at SondeHub Status.

Chase Cars

Chase Cars can show up on the map using this tracker's chase-car features (look for the car icon at top-right) or upload their position from Chasemapper or rdzTTGOsonde.

Contribute

Did you know the tracker is open-source? Check it out on github/sondehub-tracker. Bug reports, suggestions and pull requests are welcome. A huge thanks to RGP for developing the mobile tracker that this site is based on.

Tracker Revision: a3a794e
Build Date: 2025-02-16T10:33:45Z

Zoom in for realtime data!
UTC: 2025-04-05 22:20:45 Local: 2025-04-05 22:20:45 +0
No position available
DFM17 24062772
RS41-SG W1340637
iMet-4 21C02F92
RS41-SGP W3131281
RS41-SGP W5175029
RS41-SGP V3330866
iMet-4 DA5DD1E4
RS41 W2530050
IU1JSF_chase
+−
200 km
0 msg/s 0 sondes
Leaflet | © OpenStreetMap contributors
Telemetry Graph
RS41-SGP W2530050
ShareSkewTPlots
2025-04-05 20:05:32
datetime (viewer local)
39.20515, -8.48898
coordinates
Received 2h 15m ago via:
- CT2IWF (9 dB, 403.4008 MHz)
-0.0 m/s
0.0 m/s
rate v|h
178 m
altitude
187 m
max alt
iMet-4 DA5DD1E4
ShareSkewTPlots
2025-04-05 19:52:39
datetime (viewer local)
33.55499, 32.32775
coordinates
Received 2h 28m ago via:
- ZW3A_AUTO_RX (403.9980 MHz)
18.3 m/s
11.2 m/s
rate v|h
2,521 m
altitude
2,521 m
max alt
RS41-SGP V3330866
ShareSkewTPlots
2025-04-05 21:47:27
datetime (viewer local)
48.84267, 6.66123
coordinates
Received 33m ago via:
- DB0UT-5 (-115 dBm, 404.9000 MHz)
-0.0 m/s
0.0 m/s
rate v|h
365 m
altitude
378 m
max alt
RS41-SGP W5175029
ShareSkewTPlots
2025-04-05 19:35:41
datetime (viewer local)
-40.80919, 146.54119
coordinates
Received 2h 45m ago via:
- The_Capital (12 dB, 401.4998 MHz)
-11.1 m/s
20.5 m/s
rate v|h
31 m
altitude
7,379 m
max alt
RS41-SGP W3131281
ShareSkewTPlots
2025-04-05 19:45:47
datetime (viewer local)
34.99712, -85.90325
coordinates
Received 2h 34m ago via:
- KK4GGK-2 Cleveland (7 dB, 401.5018 MHz)
-9.0 m/s
18.9 m/s
rate v|h
2,208 m
altitude
11,342 m
max alt
iMet-4 21C02F92
ShareSkewTPlots
2025-04-05 22:20:38
datetime (viewer local)
50.6763, 4.66582
coordinates
Received 7s ago via:
- F/PA9K-auto-rx (402.9990 MHz)
3.5 m/s
13.3 m/s
rate v|h
5,171 m
altitude
5,171 m
max alt
RS41-SG W1340637
ShareSkewTPlots
2025-04-05 21:24:14
datetime (viewer local)
-33.65567, 152.80545
coordinates
Received 56m ago via:
- Vk2TMF (-122 dBm, 401.5000 MHz)
-15.2 m/s
52.8 m/s
rate v|h
14,710 m
altitude
26,217 m
max alt
DFM17 24062772
ShareSkewTPlots
2025-04-05 19:28:51
datetime (viewer local)
31.27674, -91.94511
coordinates
Received 2h 51m ago via:
- KD5QZG (6 dB, 404.4100 MHz)
-4.9 m/s
24.1 m/s
rate v|h
3,570 m
altitude
5,188 m
max alt
IU1JSF_chase
2025-04-05 22:20:42
datetime (viewer local)
45.28713, 8.34472
coordinates
Received 3s ago via:
rdzTTGOsonde-dev20250218
132 m
altitude
132 m
max alt
RS41-SGP W2530050
ShareSkewTPlots
-0.0 m/s 0.0 m/s
rate v|h
178 m (187 m)
altitude (max)
2025-04-05 20:05:32
datetime (viewer local)
39.20515, -8.48898
coordinates
2.8 V
Battery Voltage
Inactive
Burst Timer
🛈If active, this indicates the time (HH:MM:SS) until the radiosonde will automatically power-off.
403.401 MHz
Frequency
9
GNSS SVs Used
Vaisala RS41
Sonde Type
Received 2h 15m ago via:
- CT2IWF (9 dB, 403.4008 MHz)
iMet-4 DA5DD1E4
ShareSkewTPlots
18.3 m/s 11.2 m/s
rate v|h
2,521 m (2,521 m)
altitude (max)
2025-04-05 19:52:39
datetime (viewer local)
33.55499, 32.32775
coordinates
3.7 V
Battery Voltage
403.998 MHz
Frequency
6 %
Relative Humidity
61.17 hPa
Pressure
4
GNSS SVs Used
-64.17°C
Temperature, External
Intermet Systems iMet-4
Sonde Type
Received 2h 28m ago via:
- ZW3A_AUTO_RX (403.9980 MHz)
RS41-SGP V3330866
ShareSkewTPlots
-0.0 m/s 0.0 m/s
rate v|h
365 m (378 m)
altitude (max)
2025-04-05 21:47:27
datetime (viewer local)
48.84267, 6.66123
coordinates
2.8 V
Battery Voltage
404.900 MHz
Frequency
43.5 %
Relative Humidity
976.3 hPa
Pressure
10
GNSS SVs Used
12.4°C
Temperature, External
Vaisala RS41-SGP
Sonde Type
Received 33m ago via:
- DB0UT-5 (-115 dBm, 404.9000 MHz)
RS41-SGP W5175029
ShareSkewTPlots
-11.1 m/s 20.5 m/s
rate v|h
31 m (7,379 m)
altitude (max)
2025-04-05 19:35:41
datetime (viewer local)
-40.80919, 146.54119
coordinates
2.7 V
Battery Voltage
07:49:36
Burst Timer
🛈If active, this indicates the time (HH:MM:SS) until the radiosonde will automatically power-off.
401.5 MHz
TX Frequency
74.2 %
Relative Humidity
1003.06 hPa
Pressure
9
GNSS SVs Used
15.8°C
Temperature, External
Vaisala RS41-SGP
Sonde Type
RSM424
RS41 PCB Version
🛈A last digit of '4' may indicate this is a new (~2023) PCB.
Received 2h 45m ago via:
- The_Capital (12 dB, 401.4998 MHz)
RS41-SGP W3131281
ShareSkewTPlots
-9.0 m/s 18.9 m/s
rate v|h
2,208 m (11,342 m)
altitude (max)
2025-04-05 19:45:47
datetime (viewer local)
34.99712, -85.90325
coordinates
2.7 V
Battery Voltage
08:21:44
Burst Timer
🛈If active, this indicates the time (HH:MM:SS) until the radiosonde will automatically power-off.
401.5 MHz
TX Frequency
78.2 %
Relative Humidity
781.1 hPa
Pressure
11
GNSS SVs Used
10.2°C
Temperature, External
Vaisala RS41-SGP
Sonde Type
RSM424
RS41 PCB Version
🛈A last digit of '4' may indicate this is a new (~2023) PCB.
Received 2h 34m ago via:
- KK4GGK-2 Cleveland (7 dB, 401.5018 MHz)
iMet-4 21C02F92
ShareSkewTPlots
3.5 m/s 13.3 m/s
rate v|h
5,171 m (5,171 m)
altitude (max)
2025-04-05 22:20:38
datetime (viewer local)
50.6763, 4.66582
coordinates
5.1 V
Battery Voltage
402.999 MHz
Frequency
45.1 %
Relative Humidity
534.56 hPa
Pressure
16
GNSS SVs Used
-14.66°C
Temperature, External
Intermet Systems iMet-4
Sonde Type
Received 7s ago via:
- F/PA9K-auto-rx (402.9990 MHz)
RS41-SG W1340637
ShareSkewTPlots
-15.2 m/s 52.8 m/s
rate v|h
14,710 m (26,217 m)
altitude (max)
2025-04-05 21:24:14
datetime (viewer local)
-33.65567, 152.80545
coordinates
2.6 V
Battery Voltage
401.500 MHz
Frequency
4.6 %
Relative Humidity
9
GNSS SVs Used
-63.1°C
Temperature, External
Vaisala RS41-SG
Sonde Type
Received 56m ago via:
- Vk2TMF (-122 dBm, 401.5000 MHz)
DFM17 24062772
ShareSkewTPlots
-4.9 m/s 24.1 m/s
rate v|h
3,570 m (5,188 m)
altitude (max)
2025-04-05 19:28:51
datetime (viewer local)
31.27674, -91.94511
coordinates
4.82 V
Battery Voltage
404.410 MHz
Frequency
20
GNSS SVs Used
Graw DFM17
Sonde Type
Received 2h 51m ago via:
- KD5QZG (6 dB, 404.4100 MHz)
IU1JSF_chase
132 m (132 m)
altitude (max)
2025-04-05 22:20:42
datetime (viewer local)
45.28713, 8.34472
coordinates
Received 3s ago via:
rdzTTGOsonde-dev20250218
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