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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/6SKHVSKA3F2KBEGMKHZ5UF2CQPXTW3NE/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "9E7C1224C8FB4BDAB07E6C412B14849E@jimPC2",
    "message_id_hash": "6SKHVSKA3F2KBEGMKHZ5UF2CQPXTW3NE",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/6SKHVSKA3F2KBEGMKHZ5UF2CQPXTW3NE/",
    "sender": {
        "address": "jimlist (a) zoho.com",
        "mailman_id": "a1e800159d7d45908949a97a9e9f3b8f",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/a1e800159d7d45908949a97a9e9f3b8f/emails/"
    },
    "sender_name": "Jim Heck G3WGM",
    "subject": "[amsat-bb] AO-73/FUNcube",
    "date": "2017-01-08T19:53:58Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi Folks,\n\nI have just switched the sat into Educational Mode, ie transponder plus low \npower beacon when in darkness, transponder off and full power beacon when in \ndaylight.\n\n73s Jim G3WGM\n\n\n\nAO-73 FUNcube-1\nThe transponder is normally operational only when the satellite is in \neclipse, ie the solar panels are NOT being illuminated. During weekends \n(from pm Fridays UTC to PM Sundays UTC) the transponder is operational 24/7.\n\nWhen the transponder is switched off, the telemetry beacon is on full power, \nwhen the transponder is on the beacon it is on low power. During holidays, \neg Christmas, New Year, Easter, etc, the transponder maybe activated for \nextended periods. Watch AMSAT-BB for announcements which are usually made on \nFriday evenings (UTC)\n\nThe nominal transponder frequencies are:\nUplink:   435.150 - 435.130 MHz LSB (Inverting)\nDownlink:   145.950 - 145.970 MHz USB\nTelemetry Tx: 145.935 MHz BPSK\n(The passband may be up to 15kHz higher depending on on-board temps. Low \ntemperatures give higher freqs!)\n\n\nFUNcube-2 aka FUNcube on UKube\nThe FUNcube-2 sub-system continues to operate autonomously and, almost \ncontinuously, in amateur mode. The transponder is operational and the \ntelemetry downlink is functioning with\nabout 70mW output. The FUNcube-1 Dashboard does not correctly display the \ntelemetry but it\ndoes correctly decode the data and uploads it to the FUNcube Data Warehouse \nfrom where\nit can be examined. Most of the real time data channels are operational and \nthese include\nbattery voltages, temperatures and ADCS data coming via the main On Board \nComputer (OBC).\n\nThe transponder is interrupted for a few seconds every 2 minutes when the \nother transmitter\nsends its CW beacon and, occasionally, for a few seconds when the main OBC \nreboots (approx seven times each orbit).\n\nThe nominal transponder frequencies are:\nUplink:   435.080 - 435.060 MHz LSB (Inverting)\nDownlink:   145.930 - 145.950 MHz USB\nTelemetry Tx: 145.915 MHz BPSK\n(The passband may be up to 10kHz higher depending on on-board temps. Low \ntemperatures give higher freqs!)\n\n\nEO79 FUNcube-3\nDue to power budget constraints the transponder cannot be operational 24/7 \nand an orbit specific schedule has been developed. The transponder will \ncommence operation 27 minutes after the spacecraft enters sunlight and will \nstay on for a period of 25 minutes. This schedule may be modified in future \nmonths as a result of experience.\n\nThe nominal transponder frequencies are:\nUplink: 435.0723-435.0473 MHz LSB (Inverting)\nDownlink: 145.946-145.971 MHz USB\n\nFurther detailed info on EO79 transponder frequencies is at:\nhttps://amsat-uk.org/2016/11/10/eo79-funcube-3-transponder-commences-regular-operation/\nAll FUNcube transponders are sponsored by AMSAT-UK and AMSAT-NL. We are very \ngrateful for the assistance given by Innovative Solution In Space Bv, The \nNetherlands.\n\n\n",
    "attachments": []
}