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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/HJPSXZ3OFYBAAL5QD35RKNAV42BV7CQM/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "HJPSXZ3OFYBAAL5QD35RKNAV42BV7CQM",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/HJPSXZ3OFYBAAL5QD35RKNAV42BV7CQM/?format=api",
    "sender": {
        "address": "n1uw (a) gokarns.com",
        "mailman_id": "684263b135e74eb98a4fed6b61b4c189",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/684263b135e74eb98a4fed6b61b4c189/emails/?format=api"
    },
    "sender_name": "Frank Karnauskas",
    "subject": "Re: [amsat-bb] Attaching the coax to antenna boom",
    "date": "2019-03-18T05:25:02Z",
    "parent": null,
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/D7WWO7PK3CTPC4W472NEKAGDA6VCHSUB/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "This is quite curious.\n\nPage 1 of the WA5VJB paper says, \"Run the coax back down the antenna\nand along the boom keeping the radius small...\"  His hand-drawn\nillustration shows the feedline going down the boom then making a hard\nturn at the boom-to-cross arm plate.\n\nThe M2 instruction sheets for the 2MCP8A and 436CP16 antennas both\nstate (in bold type), \"Do not route feedline to boom to mast plate  as\nexiting antenna here will adversely affect circular field.\"\n\nMr. Britain's paper is obviously focused on mounting the cross bar\nsomewhere along the boom of a somewhat long antenna.  The M2\ninstructions are for mounting short antennas from the back of the boom\nto the cross bar. Not the same situation.  But, for a newbie like me,\nthe definitive conclusion to this discussion is...I am still confused.\n\nI was hoping to hang my M2 LEO antennas Monday morning but now not\nuntil after I call the M2 support line for their read on this.\n\n73,\nFrank\n\nFRANK W. KARNAUSKAS, N1UW\nARRL MINNESOTA AFFILIATED CLUB COORDINATOR\nAMSAT NEWS SERVICE ROTATING EDITOR\n1402 SUMMIT SHORES DR.\nBURNSVILLE, MN 55306\[email protected]\n612-644-9174\n\n\n-----Original Message-----\nFrom: AMSAT-BB [mailto:[email protected]] On Behalf Of Gary\nSent: Sunday, March 17, 2019 2:29 PM\nTo: radiomb; [email protected]\nSubject: Re: [amsat-bb] Attaching the coax to antenna boom\n\nYes, you can, just pay attention to how far your coax turn is from\nyour driven element. There are a couple spots to avoid.\n\nIt is pretty well explained in Kent Britain's (wa5vjb) paper here:\nhttp://www.kk0sd.net/metalboom/metalboom.htm\n\n73,\nGary kk0sd\n\n\n-----Original Message-----\nFrom: AMSAT-BB <[email protected]> On Behalf Of radiomb\nSent: Sunday, March 17, 2019 4:04 PM\nTo: [email protected]\nSubject: [amsat-bb] Attaching the coax to antenna boom\n\n   Building my new ground station and another question. I have always\nonly elevated my antenna 90 degrees. I loose about 20 25 seconds while\nthe azimuth rotator turns 180 degrees to track the rest of the pass. I\nhave just let the coax hang off the back of the antennas in a big\nloop. I am afraid it will get hung up going 180 degrees. Question, Can\nI attach the coax to the antenna boom and run it back until it gets to\nthe cross boom or will that throw off the radiation pattern?   \nThanks 73\n  Mike K4MIA\n\n \n_______________________________________________\nSent via [email protected]. AMSAT-NA makes this open forum available\nto all interested persons worldwide without requiring membership.\nOpinions expressed are solely those of the author, and do not reflect\nthe official views of AMSAT-NA.\nNot an AMSAT-NA member? Join now to support the amateur satellite\nprogram!\nSubscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n_______________________________________________\nSent via [email protected]. AMSAT-NA makes this open forum available\nto all interested persons worldwide without requiring membership.\nOpinions expressed\nare solely those of the author, and do not reflect the official views\nof AMSAT-NA.\nNot an AMSAT-NA member? Join now to support the amateur satellite\nprogram!\nSubscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n\n",
    "attachments": []
}