AO-123
ASRTU-1 · amateur radio satellite, NORAD 61781
Heard today
Modes FM, Digi
Last heard 1 h ago
Orbit LEO, 94 min
AO-123 frequencies
| Uplink | Downlink | Beacon | Mode |
|---|---|---|---|
| 145.875 MHz | 435.400/436.210/10460.000 MHz | — | 9k6BPSK* QSPK FM* SSDV* |
| 145.850*/145.875 MHz | 435.400*/436.210/10460.000 MHz | — | 9k6BPSK* QSPK FM* SSDV* |
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 AO-123 on AMSAT 1 h ago.
From reports filed on AMSAT, last 30 days.
Orbit
| Type | Low Earth orbit |
|---|---|
| Altitude | 447–462 km |
| Inclination | 97.3° |
| Period | 93.7 min |
| TLE epoch | 2026-10-08 07:03 UTC |
Orbital elements: CelesTrak, checked every 3 hours.
Questions about AO-123
- What is the AO-123 uplink frequency?
- AO-123 listens on 145.875 MHz (9k6BPSK QSPK FM SSDV) and 145.850*/145.875 MHz (9k6BPSK QSPK FM SSDV).
- What is the AO-123 downlink frequency?
- AO-123 transmits on 435.400/436.210/10460.000 MHz (9k6BPSK QSPK FM SSDV) and 435.400*/436.210/10460.000 MHz (9k6BPSK QSPK FM SSDV).
- Is AO-123 active?
- Active: amateurs reported hearing AO-123 on AMSAT 1 h ago.
- When does AO-123 pass over my location?
- Open AO-123 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.