IARU Amateur Satellite Frequency Coordination
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IARU Amateur Satellite Frequency Coordination |
| Politech-1 | Updated: 05 Mar 2026 | Responsible Operator | Jose Maria Grima Palop EA5RKP | |
| Supporting Organisation | Universitat Politècnica de València – Radio Club | |||
| Contact Person | jmgrima@upv.es.nospam | |||
| Headline Details: POLITECH-1 is a 3U educational amateur satellite developed within a public funding project and supported by the Universitat Politècnica de València Radio Club. The primary objective of the mission is to provide hands-on training in satellite systems engineering, RF communications, embedded systems, and space mission operations to university students and young radio amateurs. The satellite will operate in the amateur-satellite service and will include the following mission elements: Telemetry, Tracking and Command (TTC) System (UHF band) The satellite will use a UHF half-duplex link for telemetry, tracking, and command. All housekeeping telemetry (power system, onboard computer, thermal data, etc.) will be transmitted in the amateur band. We are currently implementing G3RUH coding to facilitate reception using standard amateur tools such as soundmodem and integration into the SatNOGS network, encouraging participation by the amateur radio community. Visible Spectrum Camera Payload (C-band downlink) The satellite will carry a visible-spectrum camera. Images will be downlinked in the amateur-satellite service using a C-band transmission at approximately 1.5 Mbps employing 2-FSK modulation. The purpose of this payload is educational and experimental, allowing students to design, implement, and validate a high-speed amateur satellite data link. The downlink will use forward error correction coding to ensure link reliability. A compatible reception terminal/software solution will be made available to enable community participation. Astrophysics Experiment – Radiation Detector The satellite includes an ionizing radiation detector for scientific and educational purposes. This data will also be sent by the C-Band communications downlink. Redundant Downlink Strategy In the event of failure of the high-speed C-band link, image and experimental data may be transmitted via the UHF TTC link at a higher data rate (up to 19.2 kbps, without redundancy). This would require packetized transmission over multiple satellite passes but ensures mission continuity and prevents data loss. Proposing a UHF downlink using 9k6 FSK G3RUH AX25 data and a C Band downlink using 2-FSK. Planning a launch into a 500/550km SSO NET late 2027. No launch provider information has been provided. | ||||
| Application Date: | 04 Mar 2026 | Freq coordination completed on | ||
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