RS-44 (DOSAAF-85)
NORAD 44909 Active Linear Transponder (V/U)
Frequencies
| Purpose | Frequency | Mode |
|---|---|---|
| Uplink Passband | 145.935–145.995 MHz | SSB/CW (V) |
| Downlink Passband | 435.610–435.670 MHz | SSB/CW (U) |
| CW Beacon | 435.605 MHz | CW |
About RS-44 (DOSAAF-85)
RS-44 is a linear transponder satellite with a wide passband, making it excellent for SSB and CW contacts. Its high orbit (1,500 km) gives long pass durations of 15-20 minutes. The V/U mode means you transmit on 2 meters and receive on 70 centimeters.
Operator Russian DOSAAF
Altitude ~1,500 km
Inclination 82.5°
Period ~115 minutes
How to Work RS-44 (DOSAAF-85)
Tune your 70cm receiver to the downlink passband (435.610–435.670 MHz). Transmit SSB or CW on 2 meters (145.935–145.995 MHz). The transponder is inverting — USB up = LSB down. Start by finding your own signal on the downlink and adjusting. Doppler correction is essential on the 70cm downlink.
Tips
- - Inverting transponder: USB up = LSB down
- - High orbit = long passes (15-20 min) and wider footprint
- - Use full-duplex if possible to hear yourself through the satellite
- - Moderate power (25-50W) with a small Yagi works well
- - Great satellite for making SSB/CW DX contacts
Next 24 Hours — Pass Predictions
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