IARU Amateur Satellite Frequency Coordination

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PhoneSat v2 Updated: 10 May 2013   Responsible Operator Carmen Felix Chaidez KJ6KRW
Supporting Organisation NASA Ames Research Center  
Contact Person Carmen.felix.c@gmail.com.nospam  
Headline Details: PhoneSat v2 is a technology demonstration mission intended to increase the functional capabilities of PhoneSat v1 and demonstrate complete satellite functionally in a low cost package. The satellite is built around the Nexus S smartphone which will be running the Android operating system and will be enclosed in a standard 1U cubesat structure. The main function of the phone is to act as the Onboard Computer, but the mission will also utilize the phone’s SD card for data storage, 5MP camera for Earth Observation, 3-axis gyroscope and 3-axis magnetometer for Attitude Determination, and 3-axis reaction wheel control system and 3-axis magnetorquer control system for Attitude Control. The main mission objective is to demonstrate each of the core subsystems: Attitude Determination, Attitude Control, Two-way communications and solar cell power generation. The two-way communication is done by a Microhard MHX2420 operating in the S-Band. The beacon downlink is done by a Stensat operating in the UHF band. The UHF beacon will be the primary means of transmitting heath data for each subsystem. The Microhard transceiver will be the primary means of uplinking TLEs, shut-off safety signal and downlinking large mission files. The satellite will periodically downlink health data packets every 30 seconds that contain basic telemetry info from the UHF beacon. The UHF beacon operates using the AFSK AX.25 packet radio protocol at a requested frequency between 435MHz and 438MHz. Total hardware cost was kept below $10k and the satellite design was kept as simple as possible. One 1U PhoneSat v2 satellite will be launched from a 3U P-POD alongside other nanosats in the ElaNa V mission. Planned for launch in Summer 2013 from Kennedy Space Centre aboard SpaceX CRS3 into a 325km circular orbit 51.6 degree inclination. **The following frequencies have been coordinated 437.425MHz downlink and simplex operation on 2401.2 -2431.2MHz**
Application Date: 21 Nov 2012   Freq coordination completed on 08 May 2013

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