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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/PJ7IMQVHFTI2M7IQ43344IS3B53ZIDQ7/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "080190471CD646148F0F70B866B7130A@jimPC2",
    "message_id_hash": "PJ7IMQVHFTI2M7IQ43344IS3B53ZIDQ7",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/PJ7IMQVHFTI2M7IQ43344IS3B53ZIDQ7/",
    "sender": {
        "address": "jim (a) milnet.uk.net",
        "mailman_id": "b81a75442ae44669af28bf348a6b3d55",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/b81a75442ae44669af28bf348a6b3d55/emails/"
    },
    "sender_name": "Jim Heck",
    "subject": "[amsat-bb] AO-73/FUNcube Mode change",
    "date": "2017-03-10T19:21:54Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi folks,\n\n  I have just changed the sat into amateur (continuous transponder) mode. Plan is to switch back to auto mode on Sunday  pm UTC as usual.\n\nPls see below for other FUNcube transponder info\n\nHave FUN with the transponder.\n\n\n73s Jim G3WGM and the FUNcube team.\n\n++++++++++++++++++++++++++++++++++\n\nFUNcube frequencies and other details\n\n++++++++++++++++++++++++++++++++++\n\n\n\nAO-73 FUNcube-1 \n\nThe transponder is normally operational only when the satellite is in eclipse, ie the solar panels are NOT being illuminated. During weekends (from pm Fridays UTC to PM Sundays UTC) the transponder is operational 24/7. \n\n\n\nWhen the transponder is switched off, the telemetry beacon is on full power, when the transponder is on the beacon it is on low power. During holidays, eg Christmas, New Year, Easter, etc, the transponder maybe activated for extended periods. Watch AMSAT-BB for announcements which are usually made on Friday evenings (UTC) \n\n\n\nThe nominal transponder frequencies are: \n\nUplink:   435.150 - 435.130 MHz LSB (Inverting)  \n\nDownlink:   145.950 - 145.970 MHz USB\n\nTelemetry Tx: 145.935 MHz BPSK\n\n\n\n(The passband may be up to 15kHz higher depending on on-board temps. Low temperatures give higher freqs!)\n\n\n\n\n\nFUNcube-2 aka FUNcube on UKube\n\nThe FUNcube-2 sub-system continues to operate autonomously and, almost continuously, in amateur mode. The transponder is operational and the telemetry downlink is functioning with about 70mW output. The FUNcube-1 Dashboard does not correctly display the telemetry but it does correctly decode the data and uploads it to the FUNcube Data Warehouse from where it can be examined. Most of the real time data channels are operational and these include battery voltages, temperatures and ADCS data coming via the main On Board Computer (OBC).\n\n\n\nThe transponder is interrupted for a few seconds every 2 minutes when the other transmitter sends its CW beacon and, occasionally, for a few seconds when the main OBC reboots (approx seven times each orbit). \n\n\n\nThe nominal transponder frequencies are: \n\nUplink:   435.080 - 435.060 MHz LSB (Inverting)  \n\nDownlink:   145.930 - 145.950 MHz USB\n\nTelemetry Tx: 145.915 MHz BPSK\n\n\n\n(The passband may be up to 10kHz higher depending on on-board temps. Low temperatures give higher freqs!)\n\n\n\n\n\nEO79 FUNcube-3\n\nDue to power budget constraints the transponder cannot be operational 24/7 and an orbit specific schedule has been developed. The transponder will commence operation 27 minutes after the spacecraft enters sunlight and will stay on for a period of 25 minutes. This schedule may be modified in future months as a result of experience.\n\n\n\nThe nominal transponder frequencies are:\n\nUplink: 435.0723-435.0473 MHz LSB (Inverting)  \n\nDownlink: 145.946-145.971 MHz USB \n\n\n\nFurther detailed info on EO79 transponder frequencies is at: \n\nhttps://amsat-uk.org/2016/11/10/eo79-funcube-3-transponder-commences-regular-operation/\n\n\n\n\n\n\n\nEO88 Nayif-1 FUNcube-5\n\nEO88 is presently operating in autonomous mode. The transponder is operational when the satellite is in eclipse, ie the solar panels are NOT being illuminated.  \n\nWhen the transponder is switched off, the telemetry beacon is on full power, when the transponder is on the beacon it is on low power.   \n\n\n\nThe transponder frequencies are: \n\nUplink:  435.045 – 435.015 MHz LSB (inverting)\n\nDownlink: 145.960-145.990 MHz USB\n\nTelemetry  Tx: 145.940MHz\n\n\n\nAll FUNcube transponders are sponsored by AMSAT-UK and AMSAT-NL. We are very grateful for the assistance given by Innovative Solution In Space Bv, The Netherlands.\n\n\n",
    "attachments": []
}