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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/FNNGYQRFQHPEM26EBSIOVEWJPPFUDU27/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "972520409A184AD69609E6AB26BBB94D@mp",
    "message_id_hash": "FNNGYQRFQHPEM26EBSIOVEWJPPFUDU27",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/MRHTKOSKMGOQPWKWL6VD2GWLK62V7HPM/?format=api",
    "sender": {
        "address": "sq7dqx (a) poczta.onet.pl",
        "mailman_id": "f5b550d714684d15a911daf1043342f4",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/f5b550d714684d15a911daf1043342f4/emails/?format=api"
    },
    "sender_name": "Mateusz",
    "subject": "[amsat-bb] Re: Arecibo on 432 MHz Moon Bounce (some calculations)",
    "date": "2010-04-21T06:45:08Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/MRHTKOSKMGOQPWKWL6VD2GWLK62V7HPM/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/4VHTTKEXJBZIKH5GELY427VYD4JOJNMH/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "\n60dBi is abt 57dB\nIt means 10exp5,7\nERP was 400x10exp5,7 W\n\n----- Original Message ----- \nFrom: \"Fabio A\" <[email protected]>\nTo: <[email protected]>\nSent: Tuesday, April 20, 2010 8:26 PM\nSubject: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce (some calculations)\n\n\n> Hello all,\n> just a curiosity, how did you found that the ERP is \"... 243,902,443 \n> Million\n> Watts\".\n>\n> Thanks\n>\n> 73s\n> Fabio\n> iw8qku\n>\n> ----- Original Message -----\n> From: \"MM\" <[email protected]>\n> To: <[email protected]>\n> Sent: Wednesday, April 07, 2010 3:06 PM\n> Subject: [amsat-bb] Arecibo on 432 MHz Moon Bounce\n>\n>\n>> Hi all:\n>> Here is a EME event you cant miss.\n>> Dust off your CW key, its time for Satellite, QRP EME.\n>>\n>> The 1,000 foot dish has 60 dBi on 432 mc and 400 watts.\n>> That comes out to be approximately 243,902,443 Million Watts ERP.\n>>\n>> enjoy\n>>\n>> wf1f\n>> www.marexgm.org\n>>\n>> (thanks to KB1MGI for passing on this data)\n>>\n>>\n>> Arecibo on 432 MHz Moon Bounce\n>>\n>> The Arecibo Observatory Amateur Radio Club will be putting the\n>> 1000-foot radio telescope on the air for 432 MHz EME from April 16-18.\n>>\n>> It can be heard with a small hand-held yagi pointed at the moon\n>>\n>> The scheduled times of operation are:\n>>\n>> April 16: 1645 - 1930 UTC\n>>\n>> April 17: 1740 - 2020 UTC\n>>\n>> April 18: 1840 - 2125 UTC\n>>\n>> Callsign: KP4AO\n>>\n>> Tx Frequency: 432.045 MHz\n>>\n>> Rx Frequency: 432.050 to 432.060+\n>>\n>> Tx power: 400 W\n>>\n>> Antenna gain: 60 dBi\n>>\n>> System noise temp: 120 K (cold sky)\n>>\n>> System noise temp: 330 K (when pointed at moon)\n>>\n>> KP4AO can be heard with a small hand-held yagi pointed at the moon and a\n>> good receiver. A 15 dBi antenna and 100 W will be enough to work us on\n>> CW.\n>>\n>> Operators at KP4AO will do their best to work as many stations as\n>> possible. Each session will start with a brief announcement and CQ in\n>> SSB. SSB QSOs may continue for 30 minutes to an hour, if the QSO rate\n>> remains high.\n>>\n>> The mode will be shifted to CW as soon as it is judged that higher QSO\n>> rates would result.\n>>\n>> We will listen for calls at frequencies 5-15 kHz higher than our own,\n>> and even higher if QRM warrants. Callers who s-p-r-e-a-d o-u-t are more\n>> likely to be copied.\n>>\n>> If you've already worked us in any mode, please do not call again --\n>> give others a chance.\n>>\n>> If we call \"CQ QRP\", we will listen for stations running 100 W or less\n>> to a single yagi. Please do not answer such a CQ if you are running more\n>> power or have a larger antenna.\n>>\n>> On April 18, if we reach a condition where most calling stations have\n>> been worked, and we judge that operating in the digital mode JT65B would\n>> produce a higher QSO rate, we will switch to JT65B.\n>>\n>> Note that any of these planned operating strategies may be changed as\n>> circumstances dictate.\n>>\n>> We are extremely fortunate to have been granted access to the world's\n>> largest radio telescope for this amateur radio good-will event. We look\n>> forward to working as many stations as possible in the alloted time!\n>>\n>> >From QRZ.COM\n>>\n>> KB1MGI\n>\n> ...snip...\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",
    "attachments": []
}