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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/NATE3IH6UE2DI33A6MK5BGSAJAERMEF6/?format=api",
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    "message_id": "004201c6dd82$e552be90$0b0a0a0a@RICK",
    "message_id_hash": "NATE3IH6UE2DI33A6MK5BGSAJAERMEF6",
    "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": "2006-09-21T13:36:08Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/SCITTVC66SRAQ4YKDLZ5HHFD3IEJBF3I/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Bill,\n\nYour premise that there is no L-band is incorrect and based on fragments of\ncomments, not the whole story.  The Eagle satellite is still undergoing\ndesign review but I suspect you will fine L-band to be active in the final\ndesign.  If you want to be part of the discussions, join the Eagle project\nteam and contribute your time and energy to the satellite design as many\nothers are doing. That, and not amsat-bb is where the serious technical\ndiscussions are taking place.\n\nRick\nW2GPS\nAMSAT LM2232\n \n\n-----Original Message-----\nFrom: Bill Ress [mailto:[email protected]] \nSent: Wednesday, September 20, 2006 1:15 PM\nTo: Rick Hambly (W2GPS); [email protected]\nCc: [email protected]\nSubject: RE: [amsat-bb] Re: Why do the amsats get more and more complex?\n\nHi Rick,\n\nI've been critical of the \"no L-Band\" decision and your recent comments\ndon't lessen that critique.\n\nYour last posting said \"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\nWhat concrete evidence is available that substantiates your claim? Perhaps\n\"real\" data could convince me and others that the decision is based on fact\nand not a paranoia about what could happen. Everything I've heard to date\nfrom AMSAT is anecdotal, opinionated and based on what you just said - FEAR.\n\nTo the contrary, the \"fact\" is that Galileo's own web site states (which I\nhave referenced here already) the reality of having to work in an\ninterference environment (i.e. ground ATC radar's and harmonics from TV\ntransmitters just to name of few) and has already started a two year study\nprogram to evaluate appropriate design considerations.\n\nI have been unable to find ANY reference to any governmental agency making\nplans to eliminate the L-Band Amateur allocation in view of Galileo. Do you\nhave evidence to the contrary?\n\nAnother \"fact\" is that the P3E team, rather than \"abandoning\" the\nallocation, has an \"engineering\" approach to mitigate the potential for\ninterference by selecting a L-Band frequency which puts the signal in a\nGalileo signal null (already pointed out by others here).\n\nThis debate could be put to rest if you could present us with \"facts\" and\nnot the \"lets get out of the kitchen 'cause we may not be able to stand the\nheat\" argument I've seen so far.\n\nReady to be convinced...\n\nBill - N6GHz\nAMSAT #21049\n\n-----Original Message-----\nFrom: [email protected] [mailto:[email protected]]On\nBehalf Of Rick Hambly (W2GPS)\nSent: Wednesday, September 20, 2006 5:55 AM\nTo: [email protected]\nCc: [email protected]\nSubject: [amsat-bb] Re: Why do the amsats get more and more complex?\n\n\nLes,\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\nSubscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n",
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