Email Detail

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/7VHVB4IAX2KNBCZQMJHIDOOFWBUYMWP3/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "7VHVB4IAX2KNBCZQMJHIDOOFWBUYMWP3",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/K3FBEBSJ53N53JYHROPKL2E6INODVWQ2/?format=api",
    "sender": {
        "address": "gary_mayfield (a) hotmail.com",
        "mailman_id": "fe442cdc520e4857a9168b9182091295",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/fe442cdc520e4857a9168b9182091295/emails/?format=api"
    },
    "sender_name": "Gary \"Joe\" Mayfield",
    "subject": "[amsat-bb] Re: Eagle efficiencies",
    "date": "2006-09-10T04:25:02Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/4J4KRLMYBT2LDX6WMQQY2R4KQNUQYT6E/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/7MAA4GTWBKBHFDEQTQX54JONCZV3DGTG/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "At some point (not that high in frequency) the beamwidths get so narrow the \nantennas are hard to point. Both on the satellite and on the ground.  I \ndon't think a spot beam would be popular with those living outside the spot. \n*for a given size* is a biased measurement.\n\n73,\nJoe\n\n----- Original Message ----- \nFrom: \"Scott Townley\" <[email protected]>\nTo: \"Amsat BB\" <[email protected]>\nSent: Saturday, September 09, 2006 2:04 PM\nSubject: [amsat-bb] Re: Eagle efficiencies\n\n\n> Clarification, or more fuel to the fire...\n> For a *fixed overall physical size (aperture)*, antenna gain is\n> proportional to f^2\n> Pathloss is proportional to 1/f^2\n> So then the total link budget actually *increases* with increasing\n> frequency (f^2*f^2/f^2=f^2), since you have an antenna at both ends,\n> subject to the assumption stated initially.\n> There are several 2nd-order terms to consider overall, such as decreasing\n> transmitter power as frequency increases, thermal/galactic noise \n> variations\n> with freq, etc., but *for a given size* higher is better.\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> \n\n",
    "attachments": []
}