Login: GUEST @ JH4XSY.13.JNET1.JPN.AS [PM95VU SOK]
home | newest check | boards | help index | log | ps | userlogin | send sysop | slog | status forward | bcm news | users | version | remove cookieWG3K > ANS 30.04.24 11:01l 36 Lines 1955 Bytes #13 (0) @ AMSAT BID : $ANS119.3 Subj: Robusta-3A With Store & Forward Repeater Scheduled for Launc Path: JH4XSY<IW0QNL<HB9ON<IW8PGT<IZ3LSV<DB0ERF<DK0WUE<DK0WUE<N2NOV<K7EK< W0ARP<N3HYM<KA3VSP<WG3K Sent: 240429/2058Z 3727@WG3K.#SMD.MD.USA.NOAM LinBPQ6.0.24 Robusta-3A is a 3U CubeSat with multiple mission 1) Amateur: Store & forward repeater, refer to 5.5 paragraph for more details. 2) Educational: No less than 300 students participated in the development of the platform. As part of their training, a module is allocated to the initiation to amateur radio. In addition, we pass the license to around ten students each year with the ANFR (French administration) and 3 new operators at CSUM. 3) Technical validation mission: An S-band transmitter is on board operating in commercial band for test purposes. This payload will not be controlled by the amateur radio band. The HAM radio messaging system provides a message-exchanging service between amateur radio users using Robusta satellite missions as relays. The main purpose of the system is to enable HAM radio operators to send and receive messages from anywhere in the world without having a direct (end-to-end) connection between them. The messaging system uses a method called ‘store and forward’ to provide this service. Messages are transported to the relay station (satellite) by a radio link, and from one geographical location to another, by the satellite orbital movement. A user sends a message to the satellite during a pass and the message is stored in the satellite’s memory. The satellite then moves on its orbit, making the stored message available for other HAM radio operators. Users can request messages to the satellite which, in turn will check if there are any stored messages available for that particular operator. Finally, the message is transmitted and it arrives at its destination A UHF downlink using 9k6 GMSK with AX25 is proposed. Launch is planned on the Ariane 6 maiden flight from Kourou, French Guiana into a 580 km circular 96 degree orbit together with GRBBEta and ISTSAT. More info at https://csum.umontpellier.fr/en/nanosatellites-projects-our-3u-projects/ *[ANS thanks the IARU for the above information
Õ[ | ̃[