mckero
6c67aa2718
The grid field accepted anything six characters long, so "ZZ99ZZ", "123456" and a callsign all reached WavelogQso.gridsquare and then the ADIF GRIDSQUARE field. Wavelog stores what arrives, and a wrong square is worse than a missing one: it pollutes grid statistics and VUCC tracking, where the error is invisible until an award check disagrees with the log. GridEntry follows the rule the callsign field settled on - refuse only what is certainly wrong. It rejects a length Maidenhead does not have, a field pair past R (S-X decodes beyond the poles, which is how a plausible entry produces an impossible position), a square pair that is not digits, and a subsquare past X. Everything else is accepted. Four characters is accepted with a note that it is only accurate to about 100km, because plenty of satellite operators exchange only the square and refusing that would reject good data. The app's own isValidLocator could not be reused: it requires six characters and is private. Two things the field does better now. It takes eight characters rather than six, since the extended form exists and truncating it would silently move the location. And case is normalised on commit rather than while typing, so the cursor no longer jumps mid-entry - the logged value is OL72ap, the conventional rendering, whatever was typed. 14 tests, including a cross-check that anything accepted at six characters or more also decodes through the app's own qthToPosition. Without that the two would be free to disagree about what a grid is.
Look4Sat: Satellite tracker
Radio satellite tracker and pass predictor for Android, inspired by Gpredict
Track satellite passes with ease!
Thanks to Celestrak and SatNOGS you have access to over 9000 active satellites.
You can search the entire database by NORAD Catalog Number or the satellite's name.
Orbital positions and passes are calculated relative to your location.
To get reliable data make sure to set the station position via the app Settings.
The application is built using Kotlin, Coroutines, Jetpack Compose and Navigation.
It is now and always will be completely ad-free and open-source.
Main features:
- Predicting satellite positions and passes for up to 10 days
- Showing the list of currently active and upcoming satellite passes
- Showing the active pass progress, polar trajectory and transceivers info
- Showing the satellite positional data, footprint and ground track on the map
- Custom TLE satellite data import is available via Three Line Element .txt files
- Offline first: calculations are made offline. Weekly TLE data update is recommended.
License
The Look4Sat application code is licensed under the GNU General Public License v3.0.
The CW decoder in feature/cw bundles the DeepCW
neural decoding model, licensed under the GNU Affero General Public License v3.0 only
(AGPL-3.0-only). Because the combined work incorporates an AGPL-3.0 component, the
combined work is distributed under the
GNU Affero General Public License v3.0 — GPL-3.0 Section 13 permits the
combination, and AGPL-3.0 Section 13 applies to the combined work as a whole.
Model provenance and attribution are documented in
feature/cw/licenses/NOTICE.md; the original GPL-3.0
text is preserved at feature/cw/licenses/Look4Sat-GPL-3.0.txt. The CW model runs
locally on-device and does not provide services over a network.