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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/OE7OZVOICRGMSMA4N5SJ2VI3YOKQWGRE/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "CAJUhCTM7XwUXVLQE5B01nifAsfROaJK4xiUfwOHW2FHUdafEkQ@mail.gmail.com",
    "message_id_hash": "OE7OZVOICRGMSMA4N5SJ2VI3YOKQWGRE",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/LA3V342NCPR46TA3MTQUVJGD7FYZQKCS/",
    "sender": {
        "address": "normanlizeth (a) gmail.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Lizeth Norman",
    "subject": "Re: [amsat-bb] Coax routing question",
    "date": "2014-12-18T02:44:04Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/LA3V342NCPR46TA3MTQUVJGD7FYZQKCS/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Dave,\nI use pvc pipe in parallel to each antenna that routs the coax (zip\ntied in place) from the rear of the boom to the cross arm. Then in to\nthe center and down with the other cables. Had a bunch of problems\nwith the coaxial cable hanging up due to the droopy loops required for\nelevation cable travel. The preamps were mounted in a box on the side\nof the tower which caused much of the trouble. Now they are mounted on\nthe cross boom. Am using 9913F7 for jumpers. lmr-400 or ldf450a come\nfrom the tower to the shack.\n\nDid have to mount the antennas in a way that balanced the array. Not\nexactly as pictured.\n\nLive in FL, so the pvc won't last long. Am looking for a replacement.\n\nNo problems in 6 months. It gets used pretty heavily. Rotator is a\nG5500 split in a Rohn 25 flat top section with tb-3 thrust bearing /\nrotor shelf configuration.\n\nDo bear in mind that the dc return for the polarity switching is the\nshield of the coax.\n\nBe looking for you.\nNorm n3ykf\n\nOn Wed, Dec 17, 2014 at 6:34 PM, Dave J <[email protected]> wrote:\n> I am assembling a satellite antenna system using the M2 2MCP22 and 436CP30\n> circularly polarized antennas with polarity switches and a fiberglass cross\n> arm. The M2 instructions specify the feedline going off the rear of the\n> antennas. Mechanically I would prefer to route the feedline and polarity\n> control up the boom to the cross arm. I plan on mounting the antennas in a\n> cross pattern with no element parallel to the cross arm. Since the RF\n> connectors face the rear I was planning on making a hairpin loop at the rear\n> of the boom or using good quality 90 degree elbows. Just wondering if folks\n> have had experience setting things up this way and what effect (if any) this\n> would have on performance.\n>\n>\n>\n> Thanks and Happy Holidays\n>\n> Dave WB9YIG\n>\n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available\n> to all interested persons worldwide without requiring membership. Opinions expressed\n> are solely those of the author, and do not reflect the official views of AMSAT-NA.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n",
    "attachments": []
}