OscarWatch
Know where the bird is. Know where to point. Know where to tune.
Work amateur satellites from one place. OscarWatch Tracker in the shack for the pass, with the OscarWatch Logbook, OscarWatch FT4 and OscarWatch SSTV built in, plus live transponder status, our own TLEs, and UHM on packet.
Sign up to unlock more in OscarWatch Tracker
OscarWatch Tracker works on its own. Connect it to a free OscarWatch account and it joins the community: share what you hear, see who heard you, and know when the station you called copied you.
Satellite status reporting
Report a transponder as On, Off or Telemetry only straight from OscarWatch Tracker during the pass. Your report updates the public status page for everyone.
About status reportingSatellite spots
OscarWatch FT4 shares the stations it decodes, tagged with the satellite. See who heard you on RS-44 in the last 15 minutes, and which grids are active.
About satellite spotsUHM (You Heard Me)
Find out within a minute whether the station you called on a packet digipeater heard you, so you can stop repeating and leave room on the pass.
How UHM works- 1 Create a free account with your callsign and gridsquare.
- 2 Create an API token under Settings.
- 3 Paste the token into OscarWatch Tracker and you are connected.
The suite
OscarWatch Tracker is the program you run in the shack. The rest of OscarWatch backs the pass: transponder status, TLEs, and packet confirmation.
OscarWatch Tracker
Pass tracking with map, sky plot, Doppler, and optional rotator and CAT for FM cubesats and linear transponders.
Explore OscarWatch Tracker
OscarWatch Logbook
Log QSOs during the pass, export ADIF, and optionally push to Cloudlog. It lives in OscarWatch Tracker, not as a separate download.
Explore OscarWatch Logbook
OscarWatch FT4
Our own FT4 modem for linear satellites like RS-44, built into OscarWatch Tracker with no WSJT-X to set up. It handles Doppler, uses your echo to keep your uplink on frequency, runs the contact for you, and logs it when you are done.
Read about OscarWatch FT4
OscarWatch SSTV
Receive SSTV pictures from the ISS and other satellites, built into OscarWatch Tracker with no separate decoder to set up. It picks the mode, straightens the picture, follows the tuning, and keeps every picture in a library.
Read about OscarWatch SSTVSatellite status
Community reports of whether catalogue transponders are On, Off, or Telemetry only. Share what you hear on the next pass.
View statusUHM
You Heard Me: near-real-time confirmation on packet digipeaters, so you can stop calling when the other station already copied you.
How UHM worksTLE / transponder feed
OscarWatch has its own TLE system and a distributed transponder feed, so there are no extra files to edit. New transponders appear in OscarWatch Tracker automatically.
OscarWatch Terminal
A packet terminal with UHM built in. A dedicated client for digipeater passes is on the way.
How GreenCube started OscarWatch
The pile-up on IO-117 is why UHM exists: fewer blind repeats, more real RF contacts. GreenCube itself is QRT, but that origin story is still part of OscarWatch.