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Ham radio satellite tracker

Where the amateur satellites are right now, and the frequencies to work them.

Positions update every 5 secondsOrbits from AMSAT element sets

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Set your grid to see which satellites are above your horizon.

Live positions

Dashed lines show the next orbit
New to satellites? How it works
What are amateur radio satellites?
Ham radio satellites are spacecraft with radio repeaters or transponders that amateur radio operators can use. Some retransmit your signal (like a repeater in space), others have linear transponders for SSB/CW.
What equipment do I need?
  • FM satellites (easiest) - Any dual-band HT (like Baofeng) + better antenna
  • Linear transponders - All-mode radio (SSB/CW) + directional antenna
  • Antenna - Arrow antenna or Elk log periodic are popular portable options
What's a "pass"?
A pass is when a satellite is above your horizon and you can potentially work it.
  • AOS = Acquisition of Signal (satellite rises)
  • LOS = Loss of Signal (satellite sets)
  • Max elevation = Highest point in the sky (higher = better)
What's Doppler shift?
Satellites move fast (~17,000 mph), so the frequency shifts as they approach and recede.
  • Approaching = Frequency is higher than listed
  • Receding = Frequency is lower than listed
You need to adjust your frequency during the pass. Apps like "SatDump" can help.
FM vs Linear satellites?
  • FM (like SO-50) - One QSO at a time, first come first served. Easy but crowded!
  • Linear (like RS-44) - Multiple QSOs simultaneously on different frequencies. SSB/CW only.
Start with FM satellites to learn, then move to linear for more activity.
Why can't I hear the satellite?
  • Antenna - The rubber duck won't work! Need a gain antenna pointed at the sat
  • Doppler - You may be on the wrong frequency; try tuning around
  • Low pass - Passes under 20° elevation are tough; wait for a higher pass
  • Satellite off - Some sats have schedules or are in eclipse
Best satellites for beginners?
  • ISS - Loud and easy, but not always active
  • SO-50 - Reliable FM satellite, needs 67 Hz tone to activate
  • TEVEL satellites - FM transponders, good beginner targets
  • RS-44 - Good linear transponder for SSB
What antenna should I use?
  • Arrow II (~$80) - Popular dual-band yagi, handheld
  • Elk 2M/440L5 (~$120) - Log periodic, works well
  • DIY tape measure yagi - Free! Plenty of plans online
Pro tip: You need to physically track the satellite across the sky with your antenna!
TL;DR: Get a dual-band HT + Arrow antenna, find when SO-50 passes over you, point at it, and make a contact! Start simple with FM satellites before trying linear transponders.

Active satellites

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Satellite resources

AMSAT N2YO Tracking Heavens Above Satellite Status DK3WN Sat Blog