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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/XFYO3UU25OJYADOT4LSFRFQ7PFHV7DZE/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "004e01c6d441$42ff05d0$72b7b546@kc6uqh",
    "message_id_hash": "XFYO3UU25OJYADOT4LSFRFQ7PFHV7DZE",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/T4F4QWMKJ2PKPHBM23CNTSYSZ24N7GJI/?format=api",
    "sender": {
        "address": "kc6uqh (a) cox.net",
        "mailman_id": "d9201820d18047e4a2772c86bda5e111",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/d9201820d18047e4a2772c86bda5e111/emails/?format=api"
    },
    "sender_name": "kc6uqh",
    "subject": "[amsat-bb] Re: S-band on Eagle",
    "date": "2006-09-09T18:53:38Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/T4F4QWMKJ2PKPHBM23CNTSYSZ24N7GJI/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Kyle,\nDigital CC Rider transponder requires more bandwidth that a linear \ntransponder passing a single SSB or CW signal.\nMeasurments made using SSB receivers, and recolections of AO-40 reception on \nS Band are NOT valid comparisons.\n\nThe 902 MHz to 928 MHz Band in Escondido, Ca. has a solid noise floor of -70 \ndBm accross the Band, several years after 900 cordless phones were offered \nfor sale. Put that fact in the S Band predictions 5 years from now.\n\nAmateurs should not run away from ISM/License Free intrusion into our bands, \nWE JUST NEED TO MAKE THEM OUTPUTS, and receive on other bands!\n\nArt,\nKC6UQH\n----- Original Message ----- \nFrom: <[email protected]>\nTo: \"amsat-bb\" <[email protected]>\nSent: Saturday, September 09, 2006 12:00 AM\nSubject: [amsat-bb] S-band on Eagle\n\n\n\nHi,\n\nI've been following the thread about Eagle, and like many others I am sad to\nhear that S-band will not fly. I do\nlook forward to working S-band on P3E, and hope the Eagle team will\nreconsider, and fly an S transmitter, even\nif it is considered a backup or emergency transmitter.\n\nI understand why the team wants to drop it, but I have a feeling that if we\nDON'T fly it, we'll wish that we had. Sort of\nputting all the eggs in one basket to depend on U/v to work for the life of\nthe bird, isn't it? Remember AO-40 - I never\nheard the S1 TX, but aren't we all glad there were two S transmitters\naboard?\n\nI DO look forward to working U/v on Eagle, but I doubt that my budget will\nallow experimenting with new\nmodes such as C-band anytime soon. With this in mind, as far as I'm\nconcerned, Eagle will be a U/v bird only.\n\nWhile I won't argue that the 2.4 GHz spectrum is a 'sewer' in some areas,\nI've only had serious QRM on one occasion. The\nradar pulses or spread spectrum noise was cured by my radio's Noise Blanker.\n\nOne evening while copying AO-40, the bird's signal dropped completely off\nthe S-meter. It was like my dish had fallen off the\nroof or something! Seems a neighbor down the street got a new 2.4 GHz analog\ncordless telephone, and (you guessed it)\nshe was the dreaded full duty-cycle type - a high-school age girl!\n\nHer phone must have broken or was returned to the store soon after (WHEW!)\nI never got a chance to DF it, as I only heard it the one time, but was in\nabsolute\nhorror at the possibility of losing my S-band RX. For those of you that\ndoubt a non-licensed device can swamp your new downconverter, believe me,\nmy AIDC 3731 could hear nothing else.\n\nOn a related subject, seems like I read somewhere that some C-band\nexperimenters were considering using\ns-band units for the final conversion from 5 GHz? In other words, the C-band\nconverter would only need to\nconvert from 5 GHz to 2 GHz, and let the surplus s-band units do the rest?\nAnyone know any more about this\nsubject?\n\nAnother use for S-band converters might be for RF linking purposes? A small\ntransmitter and helix or dish at each end should work well\nfor control links or linking repeater sites maybe?\n\n73,\n\nKyle Yoksh\nKØKN\nOlathe, Kansas\nAmsat # 35249\nVUCC Satellite # 150\n\n_______________________________________________\nSent via [email protected]. Opinions expressed are those of the author.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://amsat.org/mailman/listinfo/amsat-bb \n\n\n",
    "attachments": []
}