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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/QPHXIL4KNAUO6OFPSQBKGQZOKS2NLFVR/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "QPHXIL4KNAUO6OFPSQBKGQZOKS2NLFVR",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/QPHXIL4KNAUO6OFPSQBKGQZOKS2NLFVR/",
    "sender": {
        "address": "hamoen (a) iae.nl",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Henk, PA3GUO",
    "subject": "[amsat-bb] Re: yagi design (DK7ZB)",
    "date": "2009-03-23T20:07:00Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi Bert !\n\nDK7ZB antennas have a relative small bandwidth. What I did was to\nmake all elements a bit shorter, in order to go from 144.5 to 145.8 MHz.\nEME stations seem to like the design. Fewer elements compared to other\ndesigns. Total boom length is still comparable though.\n\nI have built an 145 MHz DK7ZB, and have also done some measurements.\nHave a look at: http://www.pa3guo.com/dk7zb.html (pictures & measuments)\n\nTogether with the TS2000 my 2x6 elements DK7ZB does all I need for sats.\nUsed it for RAFT, ANDE and PCSAT-1 commanding.\nAlso enough to relative 'strong' on ISS (with the 100W from the TS2000)\n\nHenk, PA3GUO\nhttp://www.pa3guo.com\n\n-----------------------------------------------------------------------\n\nHi all,\n\nFor the 2m version, I took the following design of DK7ZB as a start:\nhttp://www.qsl.net/dk7zb/start1.htm -> 144MHz yasis -> 6 El-28-Ohm (2m60).\nBecause I want to tune this antenna to the upper side of the 2m band (I  had\n145.800MHz as center frequency in mind), I entered the data of this yagi in\nMMANA GAL, a free NEC program (http://mmhamsoft.amateur-radio.ca/mmana/).\nAfter Calculation, i got totally diferent results as on the DK7ZB website.\n\nPlease find the MMANA file as an attachment on this mail. What am i doing\nwrong?\n\n73,\n\nBert - ON4DMD\n\n\n\n\n",
    "attachments": []
}