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/MNT5COSRB42XLOTF72NWICZNGKJKIZ4L/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "MNT5COSRB42XLOTF72NWICZNGKJKIZ4L",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/MNT5COSRB42XLOTF72NWICZNGKJKIZ4L/",
    "sender": {
        "address": "lmwatbullrun (a) runbox.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Larry",
    "subject": "[amsat-bb] boom type on Yagi-Uda antenna",
    "date": "2018-09-30T13:13:09Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hans:\n\nWith regard to your question about poor performance on your homebrew LFA-\n\nMy understanding is that resonance is greatly affected in long boom\nYagi-Uda arrays by the boom type. It is not simply a matter of changing\nthe dimensions of the DE but also the parasitic element lengths and\nspacing.  The ARRL Antenna book 23rd edition has a detailed section on\nthe new LFA and OFA antennas, and they caution readers to stick to the\n'cookbook' closely or expect to spend a lot of time modeling the new\nconfiguration.  On short booms, the differences don't make so much\ndifference, but when the boom gets to be several wavelengths long it is\nan increasingly important factor in radiation pattern and resonance of\nthe parasitic elements.\n\nThe difference in width of your loop and the DE width is likely also an\nissue.\n\nHave you done any computer modeling of your design?\n\nLarry W8ANT\n",
    "attachments": []
}