What is the RS27S downlink frequency?

RS27S transmits on 436.125 MHz (SSTV), 436.125 MHz (GMSK USP 4k8), 436.125 MHz (GMSK USP 2k4) and 435.680 MHz (GMSK USP 9k6).

When does RS27S pass over my location?

Open RS27S 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.

RS27S

UTMN 2 · amateur radio satellite, NORAD 57203

Not heard today

Modes Digi Last heard 13 Oct 2026 Orbit LEO, 94 min

Track RS27S on the live map Find it in the sky

Next passes over your station

Pass times depend on where you are. Track RS27S on the live map to see its next passes over your station.

RS27S frequencies

Uplink	Downlink	Beacon	Mode
—	436.125 MHz	—	SSTV
—	436.125 MHz	—	GMSK USP 4k8
—	436.125 MHz	—	GMSK USP 2k4
—	435.680 MHz	—	GMSK USP 9k6

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

Not heard today. The last AMSAT report of RS27S being heard was 13 Oct 2026.

From reports filed on AMSAT, last 30 days.

Orbit

Type	Low Earth orbit
Altitude	457–465 km
Inclination	97.5°
Period	93.8 min
TLE epoch	2026-10-28 13:35 UTC

Orbital elements: CelesTrak, checked every 3 hours.

Questions about RS27S

What is the RS27S downlink frequency?: RS27S transmits on 436.125 MHz (SSTV), 436.125 MHz (GMSK USP 4k8), 436.125 MHz (GMSK USP 2k4) and 435.680 MHz (GMSK USP 9k6).
Is RS27S active?: Not heard today. The last AMSAT report of RS27S being heard was 13 Oct 2026.
When does RS27S pass over my location?: Open RS27S 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.