mckero
09ebf1f39a
The fldigi port ran a fixed 600 Hz NCO, so any real signal not inside 600±75 Hz (the 150 Hz filter passband) decoded nothing — the decode rate was effectively zero unless the tone happened to be on frequency. This mirrors the behaviour of the removed channelTracker: a sliding spectral peak detector now steers the NCO to the strongest tone. Changes: - Collect raw input, run a 512-pt Hann-windowed FFT every frame, find the strongest bin in 300..1500 Hz (CW range), smooth-track it. - First strong peak locks immediately (no RX reset, so the triggering element survives); later large jumps (>120 Hz) retune and reset the fldigi state machine; small drifts are eased at 20%. - Absolute energy floor (peak < 30) so silence/noise never steers. - estimatedPitch now reflects the tracked tone frequency. Verification: - New unit test: 900 Hz "CQ" with decoder initialized at 600 Hz decodes correctly and pitch moves to ~900 Hz. - All 9 decoder tests pass; full domain/cw/radar test suites green.
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.