What is the RS65S downlink frequency?

RS65S transmits on 435.615 MHz (BPSK 4k8), 435.715 MHz (BPSK 4k8) and 435.215 MHz (AFSK 1k2).

When does RS65S pass over my location?

Open RS65S 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.

RS65S

ALTAIR · amateur radio satellite, NORAD 61779

Not heard today

Modes Digi Orbit LEO, 94 min

Track RS65S on the live map Find it in the sky

Next passes over your station

Pass times depend on where you are. Track RS65S on the live map to see its next passes over your station.

RS65S frequencies

Uplink	Downlink	Beacon	Mode
—	435.615 MHz	—	BPSK 4k8
—	435.715 MHz	—	BPSK 4k8
—	435.215 MHz	—	AFSK 1k2

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

Listed as working, but nobody reported hearing RS65S on AMSAT in the last 30 days.

From reports filed on AMSAT, last 30 days.

Orbit

Type	Low Earth orbit
Altitude	440–456 km
Inclination	97.3°
Period	93.5 min
TLE epoch	2026-10-28 14:32 UTC

Orbital elements: CelesTrak, checked every 3 hours.

Questions about RS65S

What is the RS65S downlink frequency?: RS65S transmits on 435.615 MHz (BPSK 4k8), 435.715 MHz (BPSK 4k8) and 435.215 MHz (AFSK 1k2).
Is RS65S active?: Listed as working, but nobody reported hearing RS65S on AMSAT in the last 30 days.
When does RS65S pass over my location?: Open RS65S 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.