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/GEVYCVYJJRGVRBCL273LYELYQFXRWN22/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "GEVYCVYJJRGVRBCL273LYELYQFXRWN22",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/LP3UGHL23MQEGJK57YOLFTRLC2BFH6RJ/?format=api",
    "sender": {
        "address": "grant (a) dzehr.com",
        "mailman_id": "0849a83f2f144bfdb0cc921b7063711d",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/0849a83f2f144bfdb0cc921b7063711d/emails/?format=api"
    },
    "sender_name": "Grant Zehr",
    "subject": "[amsat-bb] Re: Polarization for ISS and Weather Satellites",
    "date": "2012-10-30T04:09:57Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/LP3UGHL23MQEGJK57YOLFTRLC2BFH6RJ/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "The polar orbiting NOAA weather satellites have right hand circular helical\nantennas for the VHF APT service.  Right hand circular polarization is\nrecommended for NOAA APT receiving antennas.\n\nhttp://www.noaasis.noaa.gov/NOAASIS/pubs/Users_Guide-Building_Receive_Statio\nns_March_2009.pdf\n\nSee the section on ground station antennas, p. 45\n\nGrant Zehr AA9LC\n\n-----Original Message-----\nFrom: [email protected] [mailto:[email protected]] On\nBehalf Of Graham Dillabough\nSent: Saturday, October 27, 2012 3:58 PM\nTo: [email protected]\nSubject: [amsat-bb] Polarization for ISS and Weather Satellites\n\nI haven't posted here in a very long time.  I hope this works.\n\nI am building two Quadrifilar Helix antennas (from QST, August 1996); \none for weather satellite experimentation, and one as a backup \nantenna for an upcoming ARISS contact.\n\nI haven't found anything in the ARRL antenna book, or on the web, \nthat specifically says that one mode (RHCP or LHCP) of circular \npolarization is better than the other for either of the two \napplications noted above.\n\nAny insight or experience with polarization issues with the ISS and \nweather satellites are appreciated.  The last time I did an ARISS \ncontact, I was plagued with very deep fades, and want to do better this\ntime.\n\nThanks,\nGraham\n\nGraham Dillabough, VE6KJ, VO1DZA\n\nAlbert Einstein, when asked to describe radio, replied:\n\n\"You see, wire telegraph is a kind of a very, very long cat. You pull his\ntail in New York and his head is meowing in Los Angeles. Do you understand\nthis? And radio operates exactly the same way: you send signals here, they\nreceive them there. The only difference is that there is no cat.\"\nAlbert Einstein (1879-1955) \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",
    "attachments": []
}