RS40S
UMKA 1 · amateur radio satellite, NORAD 57172
Heard today
Modes Digi
Last heard 8 h ago
Orbit LEO, 95 min
RS40S frequencies
| Uplink | Downlink | Beacon | Mode |
|---|---|---|---|
| — | 435.825/437.625*/2402.000 MHz | — | 2k4/4k8/9k6*GMSK_USP SSTV |
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.
Status
Active: amateurs reported hearing RS40S on AMSAT 8 h ago.
From reports filed on AMSAT, last 30 days.
Orbit
| Type | Low Earth orbit |
|---|---|
| Altitude | 491–510 km |
| Inclination | 97.5° |
| Period | 94.6 min |
| TLE epoch | 2026-10-08 06:54 UTC |
Orbital elements: CelesTrak, checked every 3 hours.
Questions about RS40S
- What is the RS40S downlink frequency?
- RS40S transmits on 435.825/437.625*/2402.000 MHz (2k4/4k8/9k6GMSK_USP SSTV).
- Is RS40S active?
- Active: amateurs reported hearing RS40S on AMSAT 8 h ago.
- When does RS40S pass over my location?
- Open RS40S 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.