ISS (ZARYA)NORAD 25544A satellite ground station for amateur radio operators
Predict satellite passes, control station equipment, and keep every contact
Look up satellites and radio frequencies, plan passes, coordinate rotators, radios and SDRs, then preserve the complete operating session with pass recording.
AndroidiPhone · iPadWindowsmacOS
ISS (ZARYA)NORAD 25544Azimuth132.6°
Elevation46.2°
Downlink145.800 MHz
Pass recording · Ready
WORKFLOW
One pass, from planning to record
Bring discovery, pointing, equipment control and recording into one executable ground-station workflow.
Find a satellite
Search by group, name, alias or NORAD ID, then review orbit data, amateur-radio frequencies and modes.
Plan the next pass
Calculate start and end time, duration, azimuths and maximum elevation for your observer location.
Prepare pointing and equipment
Use the sky view, map and compass; connect a rotator, radio or SDR from the desktop app.
Track and assist Doppler
Drive antenna direction from an active task and help adjust receive and transmit frequencies.
Keep the contact
For an eligible pass, the desktop app records the workspace and audio, then saves the file locally.
CAPABILITIES
Ground-station capabilities in one place
Satellite data and frequencies
Find satellites by name, group or NORAD ID and calculate pass times, azimuths and maximum elevation.
Pass prediction and map
Find satellites by name, group or NORAD ID and calculate pass times, azimuths and maximum elevation.
Sky view and compass
Find satellites by name, group or NORAD ID and calculate pass times, azimuths and maximum elevation.
Automatic rotator tracking
Monitor station equipment from the desktop app, track with a rotator and assist Doppler frequency control.
Radio, SDR and Doppler assist
Monitor station equipment from the desktop app, track with a rotator and assist Doppler frequency control.
Automatic pass recording
Automatically record the workspace and authorized audio for eligible pass tasks, then save the file locally.
Audio, SSTV, FT8 and FT4
Monitor and record audio, work with SSTV and review FT8/FT4 decoding logs in supported desktop setups.
Favorites, locations and profiles
An integrated satellite ground-station workflow covering planning, live control and post-pass records.
PASS RECORDING
Turn every enabled satellite pass into a reviewable contact record
The desktop app can automatically capture the workspace and authorized audio when an eligible pass task begins, then save the recording directly to a local folder.
MP4 · WebMDesktop membership feature
PLATFORMS
Choose the right workflow for your device
| Capability | Android | iOS/iPadOS | Windows/macOS |
|---|---|---|---|
| Satellite data and frequencies | ✓ | ✓ | ✓ |
| Pass prediction | ✓ | ✓ | ✓ |
| Map, compass, favorites and locations | ✓ | ✓ | ✓ |
| External equipment | Setup dependent | Setup dependent | Full workspace |
| Radio, SDR and rotator panels | — | — | ✓ |
| Automatic pass recording | — | — | Membership |
| Desktop FT8/FT4 decoding | — | — | ✓ |
Accuracy and safety
Pass results depend on orbital data, location accuracy and time. Follow local radio rules and keep an independent way to stop or power down moving equipment.