Commercial Satellite Services at a Prime Location
The ASF Enterprise provides reliable fiberoptic connectivity to the Lower 48. The ground station’s location (64.794, -147.536) is optimal for tracking polar-orbiting satellites. Its two X- and S-band antennas, providing 9-10 supports/day/spacecraft, are supported by ground station engineers with decades of experience.
Customer-Owned Equipment
ASF Enterprise maintains and hosts customer-owned equipment.
Secure and Convenient
Located near Fairbanks, Alaska, ASF provides a fenced, gated facility with 24/7 police and operator video monitoring, a state-of-the-art fire suppression system, and a generator power supply backup. Fairbanks has a commercial airport with direct flights to the lower 48, experienced local contractors, and nearby hotels and amenities. The climate is dry, and the winds are calm.
The ASF Station Mask
Antenna Technical Information
UAF1 Antenna (7 meter)
Key Features
- ViaSat 3-axis antenna
- 7.3m parabolic reflector
- S, X, and Ka-band downlink
- S-Band uplink
- Cassegrain configuration
- 4 ind. Freq. channels in X-band
- 400 Mbs per X-band channel
- Dual polarization support in X-band
- Model 3420 Insulated Riser
- Model 3424 Azimuth/train pedestal
- Series 3880 ACU
- VHR-1200 high-rate receiver
- 100W uplink amplifier
UAF1 X-band Telemetry Characteristics
| Characteristic | Value |
|---|---|
| Frequency | 8000 - 8500 MHz |
| G/T | Theoretical = 32 dB/K Worst case A 5 deg El |
| Polarization | RHC or LHC |
| Antenna Beamwidth | 0.3 deg |
| Modulation | BPSK, QPSK, OQPSK, 8PSK |
Data Rates
| Modulation Format | Quad-Channel Mode 2x demodulators per IF channel | Dual-Channel Mode 1x demodulators per IF channel |
|---|---|---|
| Binary Phase Shift Keying (BPSK) | 200 Mbps x 2 demods x 2 IF channels (800 Mbps total) | 400 Mbps x 2 IF channels (800 Mbps total) |
| Quadrature Phase Shift Keying (QPSK) | 400 Mbps x 2 demods x 2 IF channels (1600 Mbps total) | 800 Mbps x 2 IF channels (1600 Mbps total) |
| Offset Quadrature Phase Shift Keying (OQPSK) | 400 Mbps x 2 demods x 2 IF channels (1600 Mbps total) | 800 Mbps x 2 IF channels (1600 Mbps total) |
| 9 Phase Shift Keying (8PSK) | 600 Mbps x 2 demods x 2 IF channels (2400 Mbps total) | 1200 Mbps x 2 IF channels (2400 Mbps total) |
UAF1 S-band Telemetry Characteristics
| Characteristic | Value |
|---|---|
| Frequency | 2200-2300 MHz |
| G/T | Theoretical = 23 deg C Worst case @ 0.5 deg El = 19 dB |
| System Noise Temperature | 30 K |
| Polarization | RHC or LHC |
| Antenna Beamwidth | 1.2.deg |
| Antenna Gain | 48 dB @ Noise 30 K |
| Carrier Modulation | SC_AQPSK, BPSK, SGLS |
| Carrier Data Rate | 8 kbps to 128 kbps |
| Subcarrier Frequency | 1.024 MHz |
| Subcarrier Modulation | BPSK |
| Subcarrier Data Rate | 2 kbps to 128 kbps |
UAF1 S-band Command Characteristics
| Characteristic | Value |
|---|---|
| Frequency | 2025-2120 MHz |
| EIRP | 53 dBWi |
| Polarization | RHC or LHC |
| Antenna Beamwidth | 1.2.deg |
| Antenna Gain | 48 dB |
| Output Power | 100 W |
| Carrier Modulation | SGLS |
| Carrier Data Rate | 100 kbps to 1 Mbps |
| Subcarrier Frequency | 1.024 MHz |
| Subcarrier Modulation | FSK/AM |
| Subcarrier Data Rate | 100 bps |
UAF2 Antenna (9 meter)
Key Features
- ViaSat 3-axis antenna
- 9.1m parabolic reflector
- X-band downlink
- RHC polarization downlinks only
- S-band uplink
- Cassegrain configuration
- Series 3880 ACU
- Model 3316 pedestal
- VHR-1200 high-rate receiver
- Deicing system
- 150W uplink amplifier
- installed 1995/upgraded 2014
UAF2 X-band Telemetry Characteristics
| Characteristic | Value |
|---|---|
| Frequency | 8000-8500 MHz |
| G/T | Theoretical = 34 dB @ 23 C @ 5 deg EL |
| System Noise Temperature | 92 K |
| Polarization | RHC |
| Antenna Beamwidth | 0.22 deg |
| Antenna Gain | 55dBi @ 53 K |
UAF2 S-band Command Characteristics
| Characteristic | Value |
|---|---|
| Frequency | 2042-2052 MHz |
| EIRP | 38 dBWi |
| Polarization | RHC |
| Antenna Beamwidth | 1.1.deg |
| Antenna Gain | 42.6 dBi |
| Output Power | 50 W |
| Carrier Modulation | Linear PM |
| Modulation Index | PM: 1 Radian BPSK |
| Subcarrier Frequency | 16 kHz |
| Subcarrier Modulation | BPSK |
| Subcarrier Data Rate | 2 kbps |