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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/IVAK4UXXPGV4QSU3B2WXU4SFDZN62BZU/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "04304E0790594BE1994DD669C30179B1@GouldMainPC",
    "message_id_hash": "IVAK4UXXPGV4QSU3B2WXU4SFDZN62BZU",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/DTKXT3KX6KJRTLHZPLRK2WEGSVVOWHGC/?format=api",
    "sender": {
        "address": "gouldsmi (a) bellsouth.net",
        "mailman_id": "9f2b000d905c4738ab035c94a0dffa89",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/9f2b000d905c4738ab035c94a0dffa89/emails/?format=api"
    },
    "sender_name": "Gould Smith",
    "subject": "[amsat-bb]  AO-51 power levels",
    "date": "2009-06-26T02:25:33Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/6LXQPRCAZXFWP7WMY4IHVODPXHCZM75Z/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/QAM75WJWAUNO3SGXPVWAZCYCU7PXEGLO/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "I am still trying to tweak the power levels to get through all the eclipes \nduring the day.\n\nTonight I changed TXA (L/U) to 210 mW and TXB (V/U) to 290 (as low as I can \nget it without turning it off).\nThe eclipse I measured on one pass tonight was 16:05 minutes +- 5 sec.  The \neclipse time should start to decrease over the next few days.\n\n73,\nGould, WA4SXM\n----- Original Message ----- \nFrom: <[email protected]>\nTo: \"Jeff Yanko\" <[email protected]>; <[email protected]>\nSent: Thursday, June 25, 2009 9:45 PM\nSubject: [amsat-bb] Re: AO-51\n\n\n> If I recall correctly from a post last week, the U/V pair is operating at \n> roughly 290 milliwatts RF out on transmit, and the L/U pair is at roughly \n> 260 mW. In other words, each transmitter is operating on slightly more \n> than SO-50 (250 mW) power levels.\n>\n> I have had passes this week where the satellite was armchair copy on one \n> pass, and about like has been described this evening on another. I suspect \n> the lower power levels (half or less of what has been nominal for most of \n> the past year) and the inevitable mismatch (depending on the angle between \n> the satellite and a given ground station) of its circular-polarized \n> antennas to many ground stations' linear-polarized antennas are \n> contributing to the reception differences.\n>\n> Drew (KO4MA) or Gould (WA4SXM) can comment - and I hope they will if this \n> is incorrect - but I suspect that AO-51 continues to operate as it has \n> recently. I appreciate very much their efforts to maintain the satellite. \n> That being said, it will definitely prove to be a challenge to work for \n> many Field Day stations.\n>\n> I hope I can get the one contact on it that I can count for the club FD \n> effort I'll be a part of. And I hope that other stations will make their \n> one allowed contact and give other stations the same chance to get theirs.\n>\n> Best of Field Day luck and 73 to all,\n>\n> Tim - N3TL\n> -------------- Original message from \"Jeff Yanko\" \n> <[email protected]>: -------------- \n>\n>\n>> Wondering if AO-51 is operating? Just listened for the 2357z pass and\n>> nothing received. The last time I checked the status of the bird it shows\n>> that the 435.300 downlink was active. I also listened for the 435.150 to \n>> no\n>> avail.\n>>\n>>\n>> 73,\n>>\n>> Jeff WB3JFS\n>> Las Vegas, NV\n>> DM26\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> 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> \n\n",
    "attachments": []
}