Passes as a timeline
AOS, TCA, LOS, max elevation, and footprint on the operations map. Alarms that respect quiet hours in the park.
Satellite operations
Track the sky. Log the pass. Do not miss AOS.
ISS, AO-91, SO-50 and the rest of the operational amateur fleet. Doppler-aware passes, uplink/downlink, and a log that already knows it was a satellite QSO.
The birds that matter
ISS voice, AO-91, SO-50, and a catalog you can pin. Not a science-fair TLE dump.
Log with SAT mode
ADIF SAT_NAME, SAT_MODE, and grids of both ends. LOTW-clean.
Field Doppler
Tune coaching for handhelds and for CAT radios that can follow.
Questions
Does Log73 predict ISS passes offline?
Recent TLEs are cached on device. Fresh elements sync when you have a path; the next-pass engine still runs without one.
Can I log FM LEO and ISS crew?
Yes. Satellite QSOs are first-class with SAT fields, not a note in the comment.
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Log73 · Satellite operations · Field trial · Offline-first tactical logging