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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/BNX3ESTNWABR2M6EPNG2Q2A64T44WSG3/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "BNX3ESTNWABR2M6EPNG2Q2A64T44WSG3",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/CAK3NOUNGGAFJR36Z7PYH4OLH55RWBG6/?format=api",
    "sender": {
        "address": "darren.long (a) mac.com",
        "mailman_id": "760bc4faff4e4bb9bab85b2d8096d0cb",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/760bc4faff4e4bb9bab85b2d8096d0cb/emails/?format=api"
    },
    "sender_name": "Darren Long",
    "subject": "[amsat-bb] Re: AO-73 QSOs on the beacon?",
    "date": "2013-12-06T16:37:59Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VUXT77WUGCPU3D2MMLHZLYVBMC64PH45/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/3SQIO5LMZKCXKSDXP4REQLX37VBVW76Z/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "I also observed something like this the other day.  I wondered about its\ncause, but as I was actually doing something else at the time, I\ncompletely forgot about it.\n\nThere were, as you note, strong SSB signals around the beacon freq\nduring the AO-73 pass.\n\nCheers,\n\nDarren, G0HWW\n\nOn 06/12/13 15:47, n0jy wrote:\n> Good thought, David.  I do have the settings FCD Centre Frequency set\n> for 145945.  But I also have the auto tune range limited to 34599-44854\n> kHz which should only let the auto tune catch approximately 145931 to\n> 145941 kHz.  So it should not be (nor do I observer it to) tuning any of\n> the transponder portion.  It is always locked on the beacon as\n> identified by the hump and beep \"spikes\" as I watch it.\n> I do not hear FMing on the beacon.  It sounds like it should, but it is\n> covered by a stronger SSB signal, basically.  And it appears that the\n> combined doppler shift of the beacon and the signal make them move\n> across each other such that the QSO eventually passes by but then\n> another can come up and do the same.\n> Overloading the FCD maybe?  I do have a preamp on, maybe I'll try it\n> tonight without the preamp.  The reason I use the preamp is that when I\n> initially set up, I could not get a solid spectrograph (it blinked on\n> and off) unless I had the preamp on.  I believe that was related to the\n> version of Dashboard I had at that time as observed by a friend who had\n> seen the same thing when he just got his FCD Pro + the other day, but it\n> disappeared when he upgraded his Dashboard. Preamp is off now, I will\n> see what happens this morning and tonight.\n> \n> 73\n> Jerry\n> N0JY\n> \n> On 12/6/2013 2:47 AM, [email protected] wrote:\n>>\n>> That's an interesting observation Jerry.   Not something we saw during\n>> commissioning the satellite.\n>>   A possible cause would be image response of the dongle.  Do you have\n>> the 'zero frequency' somewhere between the beacon and the transponder\n>> passband? e.g. 145.945 or off to one side e.g. 145.920?\n>>\n>> Other possibility is a large signal in the transponder passband\n>> causing the beacon to FM.    Is the modulation 'FM' or does it decode\n>> as SSB?\n>>   Thanks\n>>   David G0MRF\n>>\n>>\n>> -----Original Message-----\n>> From: n0jy <[email protected]>\n>> To: AMSAT-BB <[email protected]>\n>> Sent: Fri, 6 Dec 2013 4:40\n>> Subject: [amsat-bb] AO-73 QSOs on the beacon?\n>>\n>>\n>> During the eclipse passes while copying telemetry with my Funcube Dongle\n>> Pro + I am hearing SSB QSOs on the beacon frequency.\n>> They usually \"walk\" across it but what puzzles me is that the website\n>> info indicates that the transponder passband is well away from the\n>> beacon frequency.\n>> Am I experiencing some weird stuff with my Dongle or is it possible for\n>> stations to work on an uplink that puts their downlink on the beacon\n>> frequency?\n>>\n>> Thanks,\n>> Jerry\n>> N0JY\n>> _______________________________________________\n>> Sent via [email protected]. Opinions expressed are those of the author.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite\n>> program!\n>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>>\n>>  \n>> _______________________________________________\n>> Sent via [email protected]. Opinions expressed are those of the author.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite\n>> program!\n>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>>\n>>\n> \n> _______________________________________________\n> Sent via [email protected]. Opinions expressed are those of the author.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n",
    "attachments": []
}