IARU Amateur Satellite Frequency Coordination

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Arksat-2 Updated: 04 Apr 2022   Responsible Operator Richard Pope KG5MWG
Supporting Organisation Univeristy of Arkansas  
Contact Person rjpope1@yahoo.com.nospam  
Headline Details: The ARKSAT2 is a 2U CubeSat (10cm x 10cm x 22.7 cm, 2.8kg) developed at the University of Arkansas, and is manifested on a Northrop Grumman Antares (NG17) rocket launching out of NASA Wallops Island as part of NASAs 8th Cubesat Launch Initiative (CSLI-8). The team is consisting of undergraduate and graduate students, faculty, and members of the Amateur Radio Club of the University of Arkansas (ARCUA), which is open to the public. The undergraduate students are predominantly honors research and senior capstone design students (over 20 students in the past 3 years) from the College of Engineering while the graduate students (3 Ph.D. and 2 M.S.) belong to the PIs research team. ARKSAT-2 will highlight a water - propylene glycol mixture cold gas propulsion technique, and will be equipped with a simple, reliable, low-cost, and lightweight Solid State Inflatable Balloon (SSIB) deorbiting system applicable to small satellites. The SSIB is comprised of a solid state gas generator (SSGG), space compatible balloon film structure, and spacecraft integration subsystem. The SSGG is a 2D array of sodium azide crystals, which, when heated, Amateur Satellite Frequency Coordination Request — Page Rev. 39. 3 September 2018 4 produce N2 gas which will inflate the balloon. The heater system uses about 1W of power for less than 10 seconds, and the gas is generated within milliseconds. The inflated balloon will then greatly increase the aerodynamic drag on the satellite, reducing the amount of time a given satellite will be orbital debris after its mission has ended. The SSIB system is designed to reduce orbital lifetime of small satellites well within the FAA requirements of 25 years. Mission Phases: 1) i) Initial flight demonstration and ground station communications operations for UA 2) ii) Demonstrate operation of propylene glycol cold gas thrusters 3) iii) Test small satellite deorbiting system in LEO space environment. Proposing a UHF downlink for beacon and data using 9k6 FSK with AX25 and LORA on 902 MHz. Planning a deployment to the iSS in February 2022. More info from spacecenter.uark/arksat/index.php **More information has been requested from the team** **A downlink on 437.175 MHz has been coordinated**
Application Date: 03 Jul 2021   Freq coordination completed on 04 Apr 2022

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