![]() Whatever flies in space and transmits in a band needs to be in a space service. According to the ITU and *any* national legislation I know there is *no* ISM space service (see ref 1). transmitter or receiver) there needs to be an assigned “space service”. I am referring to transmissions from space objects (satellites), and for those according to the ITU for each beam (i.e. There seems to be a great misunderstanding about ISM, space and Amateur radio service. Unfortunately, as is often the case the ARRL servers are refusing to respond. Here are links to the ARRL (U.S.) Amateur Radio Band-Plans. ![]() a non-Amateur licensed LoRa transmitter operated at 33 centimeters may use encryption without recourse. licensed Amateur sends LoRa traffic that is encrypted in the shared 33 centimeter band – is that illegal? Meanwhile in the U.S. LoRa traffic can be and often is encrypted. Amateur operator you are not allowed to send any encrypted traffic inside the allocated Amateur bands. LoRa is an interesting case here in the U.S. Unfortunately the 33 centimeter band was forced into sharing because it was highly underutilized by the Amateur Radio community. Plus if I’m not mistaken, the ISM signals take precedent over Amateur emissions in the U.S. (ITU-Region-2) there is an ISM/Amateur overlap in the 33 centimeter band (902-928MHz) which now must be shared between the two services. It depends where you are and what the laws of your country are. Besides being illegal in many countries (e.g. Posted in Radio Hacks, Space Tagged FossSat, Ground Station, LoRa, satellite, telemetry, TinyGS Post Papadeas said: “Please stop supporting proprietary and patended (sic) technologies like LoRa in the amateur radio spectrum. If you’re interested in getting your feet wet receiving satellite signals, this is an easy project to start with that won’t break the bank. It uses Telegram to distribute data, with a message being sent to the channel anytime any station in the network receives a telemetry packet from a satellite. ![]() ![]() The TinyGS project started out as a weekend project back in 2019 to use an ESP32 to receive LoRa telemetry from the FossaSat-1 satellite, and has expanded to encompass all satellites, and other flying objects, using LoRa-based telemetry. The firmware has a lot of features, including OTA updates and auto-tuning of your receiver to catch each satellite as it passes overhead. This module is one of several supported by the TinyGS project, which provides receiver firmware and a worldwide telemetry network consisting of 1,002 stations as of this writing. The construction of this ground station makes use of standard off-the-shelf items with a Heltec ESP32-based LoRa / WiFi module as the heart. He also built a smaller variant which is battery powered for portable use. Even with a sub-optimal setup consisting of a magnetic mount antenna stuck outside a window, is able to receive telemetry from satellites over 2,000 kilometers distant. The station receives signals from any of several satellites which use LoRa for telemetry, like the FossaSat series of PocketQube satellites. Embedded engineer has put together a compact LoRa satellite telemetry ground station that fits in your hand and can be built for around $40 USD.
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