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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/XW2AAZVSXJSGQRVCHLHDQI3DHNIEL7F4/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "XW2AAZVSXJSGQRVCHLHDQI3DHNIEL7F4",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/O6YNTOAC36K54YCPAYF6LXTS2U4H4ZWJ/?format=api",
    "sender": {
        "address": "w2ev (a) yahoo.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Ev Tupis",
    "subject": "Re: [amsat-bb] dual band vhf/uhf antenna",
    "date": "2020-02-16T12:30:07Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/O6YNTOAC36K54YCPAYF6LXTS2U4H4ZWJ/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/XKACQPU7JU3YKS5KL55EEF3SCVRXVMWR/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": " Hi Jackie,\nSame-plane antennas work nicely, as long as they are designed with that in mind. See multi-band same-plane yagi examples in the HF world.  Kent is a skilled designer who both engineers *and* pretests before publication.\n\nSimply interlacing antenna elements for different bands without taking into account their mutual interaction invites problems.\nArrow gets around that by placing different bands in different planes.\n\nEv, W2EV\n\n\n    On Sunday, February 16, 2020, 7:08:34 AM EST, Jackie Dander via AMSAT-BB <[email protected]> wrote:  \n \n I built the combination dual band 2meter/70cm antenna found at WA5VJB's\nwebpages. I chose the 5 elements on UHF forward and 2 elements on VHF rear.\nAll elements are in the same plane.\nI now read elsewhere that in-same-plane uhf/vhf elements can interfere with\neach other. I visited the Arrow website and see their LEO antennas are\nopposing for uhf/vhf.\nMy question is if i made a mistake building the uni-plane version? Why did\nWA5VJB has such success?\n_______________________________________________\nSent via [email protected]. AMSAT-NA makes this open forum available\nto all interested persons worldwide without requiring membership. Opinions expressed\nare solely those of the author, and do not reflect the official views of AMSAT-NA.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb\n  \n",
    "attachments": []
}