UHF ground stations UHF 地面站 (updated: 02/03/2024)
The EnduroSat UHF telemetry, tracking, and command (TT&C) ground station is specifically dedicated to small satellites. It operates in UHF frequency using two 18-elements cross-polarized Yagis. Polarization is switchable between RHCP and LHCP. Two stations consists of three antenna systems were built by SPL. The 1st G/S (RS G/S) is located at remote sensing building of NCU campus. There are two UHF antenna installed on the roof top of the remote sensing building. The 1st UHF antenna (R3-UHF1 or NCU-UHF1) was procured directly from EnduroSat and the 2nd one (R3-UHF2 or NCU-UHF2) was built by SPL. The 2nd G/S (TH G/S) is located at Ta-Hwa high school and the antenna (TH-UHF or NCU-UHF3) was installed on the roof top of the their dorm.
Highlights:
- Antenna Gain: 17.0 dBi
- Max azimuth angular velocity: 4 °/sec
- Max elevation angular velocity: 1.3 °/sec
- Power Amplifier: up to 40 W
- Modulation schemes: 2GFSK(default), OOK, GMSK, 2FSK, 4FSK, 4GFSK(optional)
- Packet Format: AX.25 UI-bitstuffed, NRZI-encoded, G3RUH-scrambled, CRC16-CCIT
- Azimuth rotation range: 360/500 deg (selectable)
- Elevation rotation range: 0-90 deg
- Operational temperature: -30 to 55 deg Celsius
UHF antenna system includes:
- Tower unit 3m (built in rotator and bearing supports)
- Basement plate
- Stabilizer legs kit (3x4m)
- Mast 3m
- Fiberglass cross boom 2m
- UHF cross polarized Yagi - 42 elements / 5.7m (2pcs)
- AZ/El rotors assembly
- UHF Transceiver Type II
