RS-44 DOSAAF-85
Linear transponderActiveLaunched 2019-12 · LEO, ~1,175 km circular, 82.5° inclination · NORAD 44909
| Transponder | Uplink | Downlink | Mode | Notes |
|---|---|---|---|---|
| Linear transponder | 145.935–145.995 MHz | 435.610–435.670 MHz | V/U SSB/CW | inverting |
| CW beacon | — | 435.605 MHz | CW |
What to expect
- The best linear satellite right now. High orbit means 20+ minute passes and a footprint spanning a continent.
- Transponder is strong; 5 W into a small yagi is plenty. Do not run more than the beacon.
- Inverting: transmit LSB on 2 m, receive USB on 70 cm.
Gear: Full-duplex all-mode rig (or two rigs) with computer Doppler correction.
Predict passes →·Walk through a pass →
Verify before a pass
- AMSAT status · was it heard in the last few hours?
- SatNOGS DB · current transmitter entries
- SatNOGS observations · recent recordings and waterfalls