IARU Amateur Satellite Frequency Coordination

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CTIM Updated: 19 Aug 2019   Responsible Operator Wengang Zheng KE0UYU
Supporting Organisation University of Colorado  
Contact Person wengang.zheng@lasp.colorado.edu.nospam  
Headline Details: The Compact Total Irradiance Monitor (CTIM) mission, designed to observe the total solar irradiance, will be transmitting a beacon signal and spacecraft telemetry and health periodically for amateur operators to detect and decode via a public telemetry decoder. Data will be stored in a public database, available for amateur operators to upload their detected data or download the full mission telemetry, health, and science data of the total solar irradiance. This mission is similar to the CSIM, MinXSS and CSSWE, which have gathered over 100 MB of data from amateur operators. As has been the case in the past, we will be actively soliciting the telemetry from amateurs. The information provided by amateurs has been crucial for past missions, enabling us to detect instrument orbits and the Doppler-shifted communication frequencies, troubleshoot the anomalies. It is common for all of our missions to have extensive student involvement during the design, building, testing, and operation of the instrument. As a university laboratory, we take the training of next generation scientists and engineers very seriously. Although the exact number of students who will be involved in CTIM is still unknown, similar missions such as CSIM, CSSWE, and MinXSS trained and used over 150 undergraduate and graduate students. 435-438 MHz with request for 437.25 MHz. Please note that this is exactly the same frequency as the CSIM and MinXSS mission, and the infrastructure to support it is already in place. Proposing a YHF downlink using 9k6 GSMK AX25 implementation Planning a launch from Florida in Nov 2018! into a 500 km 52,6 degree inclination orbit. **A downlink on 437.325 MHz has been coordinated**
Application Date: 23 May 2019   Freq coordination completed on 19 Aug 2019

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