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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/XACEJHU4RM7ZGPSGKVL3W2NAP5EY25SW/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "CACyhQtSu11aurRaCmXAk4bVZ4WNbKKsas0raKe2eYR9eVN6=RQ@mail.gmail.com",
    "message_id_hash": "XACEJHU4RM7ZGPSGKVL3W2NAP5EY25SW",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/AYCGF3UG5BBOEPKSFFO7LHFCCPGKJ3FE/",
    "sender": {
        "address": "hill.charles.robert (a) gmail.com",
        "mailman_id": "9a4d8ca588794932b63ad1aaf6eeb243",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/9a4d8ca588794932b63ad1aaf6eeb243/emails/"
    },
    "sender_name": "Robb Hill",
    "subject": "Re: [amsat-bb] KMS-4 Antennas?",
    "date": "2016-02-15T14:59:22Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/K7WCJUE5RRUM4X3FAV4ROYPLY2UINOIV/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Got the photos off the air on 2/13 broadcast of Korea Central TV.\n\nI noticed though it looked like it could be two 1/4 wave dipoles at 1/4\nwave spacing.\n\nDef. could be a fake/mockup.\n\n\nOn Mon, Feb 15, 2016 at 5:03 AM, Daniel Cussen <[email protected]> wrote:\n\n> > I got a photo of the KMS-4 sat and started wondering about the possible\n> > frequencies based on what could be antenna.\n>\n> I wrote an email to the amsat-bb a while ago which I will repeat\n> below. You should note there has been no reported emissions, and the\n> photos linked below may have been from a model made for the press, so\n> may have had fake/non flight hardware. The photos are also from the\n> previous launch a few years ago.\n>\n> Where did you get the photos you linked to and when were they\n> taken/broadcast?\n>\n>\n> ----------------------------------------------------------------------------------------------\n> Not sure if it has been posted yet, but there is a good technical\n> write up of previous North Korean satellites here:\n>\n> http://38north.org/2012/09/nhansen091212/\n>\n> Some sites suggest 450 to 470Mhz is likely band. Ideally would need a\n> very high gain setup with a wideband SDR dongle to see any\n> transmissions. If they wanted they could turn all transmitters off\n> unless commanded or else only when the GPS says they are within range\n> of the ground station. Note the article linked is only the older\n> satellites.\n>\n> I don't believe there was any public reception of actual emissions\n> from previous models. It does look likely UHF will be used. In this\n> day and age if it does emit on UHF constantly someone probably will\n> detect it and share. with possibly 6 UHF antennas there may be\n> multiple downlinks. I will buy a pint for whoever decodes the GPS\n> location downlink first!\n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available\n> to all interested persons worldwide without requiring membership. Opinions\n> expressed\n> are solely those of the author, and do not reflect the official views of\n> AMSAT-NA.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>\n",
    "attachments": []
}