FO-99 (NEXUS)
NORAD 43937 Active Linear Transponder (V/U)
Frequencies
| Purpose | Frequency | Mode |
|---|---|---|
| Uplink Passband | 145.900–145.930 MHz | SSB/CW (V) |
| Downlink Passband | 435.880–435.910 MHz | SSB/CW (U) |
About FO-99 (NEXUS)
FO-99 (NEXUS) is a Japanese linear transponder satellite built by Nihon University. It features a V/U linear transponder suitable for SSB and CW operation. Its sun-synchronous orbit provides consistent pass times.
Operator Nihon University, Japan
Altitude ~510 km
Inclination 97.5°
Period ~95 minutes
How to Work FO-99 (NEXUS)
Transmit SSB or CW on the 2m uplink passband. Listen on 70cm. Apply Doppler correction, especially on the 70cm downlink. The transponder is non-inverting (USB up = USB down).
Tips
- - Non-inverting transponder: USB up = USB down
- - Sun-synchronous orbit gives consistent pass times
- - Good satellite for SSB/CW contacts
- - Lower power than RS-44 needed due to closer orbit
Next 24 Hours — Pass Predictions
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