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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/J3ZC2GMVZTBD4PP25VRGWKGUVVOKSPNA/?format=api",
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    "message_id": "00f401c6dcb3$f5fd9050$0b0a0a0a@RICK",
    "message_id_hash": "J3ZC2GMVZTBD4PP25VRGWKGUVVOKSPNA",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/UPK4RTUGRHTRVDPDYXKITZDIFRCLMXOK/?format=api",
    "sender": {
        "address": "w2gps (a) cnssys.com",
        "mailman_id": "5948a5f4b4c343b5ae370965ac0fc1c2",
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    },
    "sender_name": "Rick Hambly (W2GPS)",
    "subject": "[amsat-bb] Re: Why do the amsats get more and more complex?",
    "date": "2006-09-20T12:54:50Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/OFLMO3ME5RKPQJFW2KXAQ3CHXQRR5COR/?format=api",
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        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/YRJ2VRA4RSM2USXIF5YO237AWHRTPK6N/?format=api",
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/SCITTVC66SRAQ4YKDLZ5HHFD3IEJBF3I/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
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    "content": "Les,\n\nDon't forget, these issues are all under review as we speak.\n\nThe answer is in two parts. First, an L-band ground antenna would be too\nlarge to disguise as a TVRO dish. Second, there is fear that over the\nlifetime of Eagle that L-band could become unavailable, particularly in\nEurope, if the Galileo system is deployed.  Galileo would be a primary\nservice and Ham transmissions would likely interfere with low cost\ncommercial receivers.\n\nI don't wish to debate these points. I'm just telling you the reasoning that\nwent into not choosing L-band. I assure you that every possibility was\nconsidered. Lists were created and discussed on each alternative.\n\nRick\nW2GPS\nAMSAT LM2232\n\n-----Original Message-----\nFrom: [email protected] [mailto:[email protected]] \nSent: Tuesday, September 19, 2006 11:29 PM\nTo: Rick Hambly (W2GPS)\nCc: [email protected]\nSubject: Re: [amsat-bb] Re: Why do the amsats get more and more complex?\n\nMaybe someone can explain why Eagle could not use the L Band for its \ndigital uplink instead of S Band? Then you would have a L/C mode and \nmany users already have a L band uplink capability.\n\nLes W4SCO\n\n\n>Eagle will carry a payload that it is hoped will revolutionize Amateur\n>Satellite communications and Ham Radio as a whole.  Initially called C-C\n>Rider, I will call it the Advanced Communications Package (ACP) because it\n>no longer uses C-band for both uplink and downlink. This package will be\n>designed to bring satellites and DX to you and to many other Hams who have\n>never been able to use a satellite or operate DX before.  This is because\n>the ground station antenna will be small, power levels reasonable, many\n>modes will be supported (from Voice and CW to Video and data\n>communications), the ground station will be affordable and the signal\n>quality will be superior. Much of this is accomplished through the use of\n>digital techniques so it will require all new equipment on the ground.\nAMSAT\n>will design the ground station equipment and publish everything so you can\n>buy it, copy it, sell it, or build it.\n>\n>The Eagle band plan has been the subject of much discussion, of late.\nEagle\n>is still in the design phase and the band plan is not finalized, so don't\n>worry just yet.  The confusion was the result of the ACP (C-C Rider) team\n>realizing that they had to find another band for the uplink. They chose\n>S-band for some good reasons but that recommendation is under review by the\n>whole Eagle team and is not yet final. There should be a final announcement\n>at the AMSAT Symposium in a few weeks.  I encourage everyone to come to the\n>Symposium and meet your AMSAT officials and learn what is really happening\n>in AMSAT.\n\n\n\n",
    "attachments": []
}