mckero eb66a77cae refactor(qrz): move the grid lookup out of the composable
LogTab read the QRZ cookie straight out of SharedPreferences through LocalContext,
inside composition, on every submission - disk access in a composable, around the
repository layer, with the client referenced by fully-qualified name inline. And it
did `if (grid != null)`, so a lookup that failed for any reason left the QSO without
a grid and told the operator nothing.

IQrzGridLookup lives in core:domain, QrzGridLookup in core:data owns the cookie read,
and the view model exposes lookupGrid. The composable now takes a callback and handles
each outcome: a locator is attached, no locator on file passes quietly because nothing
is wrong, an expired cookie says to paste a fresh one, and an unreachable QRZ says so.
That is what the four-outcome QrzGrid type from ce68f487 was for - until now nothing
consumed it and the old nullable client was still the one being called.

Note for anyone extending RadarScreen: the local holding the view model cannot be
referenced as `viewModel` inside a lambda, because that name also resolves to the
composable factory function. Hence the explicitly typed local.

The old QrzGridClient is now unused here but left in place; removing it belongs with
the settings screen, which still calls it to validate a pasted cookie.
2026-08-25 15:18:40 +00:00

Look4Sat: Satellite tracker

Look4Sat CI

Get it on Google Play Get it on F-Droid

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.

Star History

Star History Chart
S
Description
Satellite tracker and pass predictor for Android, inspired by Gpredict
https://play.google.com/store/apps/details?id=com.rtbishop.look4sat
Readme AGPL-3.0
55 MiB
0 Stars 1 Watchers 0 Forks
v4.6.2
Latest
2026-08-27 15:47:20 +00:00
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Kotlin 100%