AO-91
RADFXSAT · amateur radio satellite, NORAD 43017
Not heard today
Modes FM
Orbit LEO, 95 min
AO-91 frequencies
| Uplink | Downlink | Beacon | Mode |
|---|---|---|---|
| 435.250 MHz | 145.960 MHz | 145.960 MHz | FM* CTCSS 67.0/200 DUV |
| 435.250 MHz | 145.960 MHz | 145.960 MHz | FM* CTCSS 67.0/200bps DUV |
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 AO-91 on AMSAT in the last 30 days.
From reports filed on AMSAT, last 30 days.
Orbit
| Type | Low Earth orbit |
|---|---|
| Altitude | 423–623 km |
| Inclination | 97.5° |
| Period | 95.1 min |
| TLE epoch | 2026-10-08 01:38 UTC |
Orbital elements: CelesTrak, checked every 3 hours.
Questions about AO-91
- What is the AO-91 uplink frequency?
- AO-91 listens on 435.250 MHz (FM CTCSS 67.0/200 DUV) and 435.250 MHz (FM CTCSS 67.0/200bps DUV).
- What is the AO-91 downlink frequency?
- AO-91 transmits on 145.960 MHz (FM CTCSS 67.0/200 DUV) and 145.960 MHz (FM CTCSS 67.0/200bps DUV).
- What is the AO-91 beacon frequency?
- The beacon is on 145.960 MHz and 145.960 MHz.
- Is AO-91 active?
- Listed as working, but nobody reported hearing AO-91 on AMSAT in the last 30 days.
- When does AO-91 pass over my location?
- Open AO-91 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.