Ground Stations

The currently available ground stations are listed below. Additional information is available upon request.

– Kauai Community College – UHF, VHF, L/S-Band
– University of Hawaii at Manoa – NRL/NPS MC3 UHF, S-Band
– Honolulu Community College – L-Band, X-Band


Kauai Community College

Amateur Satellite UHF/VHF Control and L/S-Band Receive Station

OrbitronAt Kauai Community College, HSFL operates and maintains a UHF, VHF, and L/S-Band VHF amateur ground station for satellite operations.  This ground station is integrated with our in-house developed (and open sourced) COSMOS software to facilitate coordination of equipment, and tracking of satellites.  Using COSMOS, this system is capable of complete automation of satellite contacts.  The ground station is also manually controllable and assisted with Orbitron.

kcc-gs1-uhf_vhfThe ground station is fully operational, and is being used for training and practice satellite passes.  Kauai Community College serves as our primary site for training satellite operators, and is our primary operational ground station.  In 2014, we deployed our first L/S-band antenna, a 2.4m reflector.  The antenna is currently configured for reception of telemetry between 2.0-2.5GHz, and can be expanded to work across 1.5-2.5GHz.. Infrastructure has been set up to to allow for quick modifications to allow for L/S-band uplinks through this antenna. In addition, the new L/S-band telemetry/telecommand system will allow for direct implementation of IP packet exchanges with satellites, as well as allowing for standard clock/data interfaces for legacy/proprietary flexibility.

Quick Specs for UHF:
– Antenna: 430-438MHz, RHCP, 18.9dBic Gain
– Low Noise Amplifier: 21dB Gain, NF 0.5dB
– Transmit Power: >8,000W EIRP (~25kW for emergency commanding)
– TX/RX Modulation: 1200bps AFSK, 9600bps FSK (G3RUH)
– In-situ signal monitoring with dedicated spectrum analyzer
– Nominal Usage: AX.25 Packet Operation

Quick Specs for VHF:
– Antenna: 144-148MHz, RHCP, 14.4dBic Gain
– Low Noise Amplifier: 20dB Gain, NF 0.5dB
– Transmit Power: >500W EIRP
– TX/RX Modulation: 1200bps AFSK, 9600bps FSK (G3RUH)
– In-situ signal monitoring with dedicated spectrum analyzer
– Nominal Usage: AX.25 Packet Operation

Quick Specs for L/S-Band:
– Antenna: 1500-2500MHz, RHCP or LHCP, 33dBic Gain
– Low Noise Amplifier: 45dB Gain, NF 1.0-1.5dB
– Down Converter: 2000-2500MHz to 70MHz IF, +/- 20MHz, 0-50dB Gain
– RX Modulation: BPSK, QPSK, OQPSK, 8-QAM, 16-QAM
– In-situ signal monitoring with dedicated spectrum analyzer
– Nominal Usage: Customized for each supported mission

University of Hawaii at Manoa

NRL/NPS MC3 Ground Station

IMAG0598HSFL was chosen as one of four university sites to host a node of the Mobile CubeSat Command and Control (MC3) project developed by the Naval Postgraduate School. This compact node features transmit and receive capability in both S-Band and UHF, with independent antennas and radios. It has been installed on the University of Hawaii at Manoa campus for shared usage between the MC3 network, and HSFL. Its ready availability to HSFL facilitates the development of ground station technologies.

Quick Specs:
– UHF Transmit: 450 MHz
– UHF Receive: 915 MHz
– S-Band Transmit: 1925-2100 MHz
– S-Band Receive: 2210-2245 MHz
– More details available from NPS MC3 Publications

Honolulu Community College

X-Band & L-Band Earth Observation Satellite Receiver

satellitestationThis ground station is capable of receiving Earth observation satellites running on X and L band frequencies.  Installed in 2012, this ground station is tasked with taking data from multiple satellites each day.  Ground station time, as well as data routinely downlinked from Earth observation satellites, can be made available to partners, collaborators, or through other agreements.

Quick Specs:
– X-Band Receive Frequencies: 7700-8500 MHz
– X-Band demodulation optimized for EOS satellites:
Terra, Aqua, NPP, JPSS-1, FY3
– L-Band Receive Frequencies: 1682-1710 MHz
– L-Band demodulation optimized for:

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