ISS-DATA
ISS · amateur radio satellite, NORAD 25544
Not heard today
Modes FM, Digi
Orbit LEO, 93 min
ISS-DATA frequencies
| Uplink | Downlink | Beacon | Mode |
|---|---|---|---|
| — | 145.800 MHz | — | SSTV |
| 145.825 MHz | 145.825 MHz | — | 1k2 AFSK |
| — | 437.550 MHz | — | 1k2 AFSK SSTV |
| 437.825 MHz | 437.825 MHz | — | 1k2 AFSK APRS |
| 145.990 MHz | 437.800 MHz | — | 9k6 GFSK FM |
| 435.050 MHz | 145.800 MHz | — | FM |
| 145.200 MHz | 145.800 MHz | — | Voice(Reg 1) |
| 144.490 MHz | 145.800 MHz | — | Voice(Reg 2 3) |
Nominal frequencies, without Doppler. The live map shifts them for your station during a pass. Frequencies: SatNOGS DB (modified: working amateur transmitters only, in MHz), CC BY-SA 4.0.
About ISS-DATA
See live ISS position and amateur status reports.
Status
Listed as working, but nobody reported hearing ISS-DATA on AMSAT in the last 30 days.
From reports filed on AMSAT, last 30 days.
Orbit
| Type | Low Earth orbit |
|---|---|
| Altitude | 416–425 km |
| Inclination | 51.6° |
| Period | 93.0 min |
| TLE epoch | 2026-10-08 00:21 UTC |
Orbital elements: CelesTrak, checked every 3 hours.
Questions about ISS-DATA
- What is the ISS-DATA uplink frequency?
- ISS-DATA listens on 145.825 MHz (1k2 AFSK), 437.825 MHz (1k2 AFSK APRS), 145.990 MHz (9k6 GFSK FM), 435.050 MHz (FM), 145.200 MHz (Voice(Reg 1)) and 144.490 MHz (Voice(Reg 2 3)).
- What is the ISS-DATA downlink frequency?
- ISS-DATA transmits on 145.800 MHz (SSTV), 145.825 MHz (1k2 AFSK), 437.550 MHz (1k2 AFSK SSTV), 437.825 MHz (1k2 AFSK APRS), 437.800 MHz (9k6 GFSK FM), 145.800 MHz (FM), 145.800 MHz (Voice(Reg 1)) and 145.800 MHz (Voice(Reg 2 3)).
- Is ISS-DATA active?
- Listed as working, but nobody reported hearing ISS-DATA on AMSAT in the last 30 days.
- When does ISS-DATA pass over my location?
- Open ISS-DATA on the live map and enter your Maidenhead locator or use GPS: the tracker lists the passes of the next 24 hours with AOS, maximum elevation and LOS, and shifts the frequencies for Doppler.