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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/O2GVKW4VD4PUX3P3D3AF2GW5TMLNBCJQ/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "O2GVKW4VD4PUX3P3D3AF2GW5TMLNBCJQ",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/O2GVKW4VD4PUX3P3D3AF2GW5TMLNBCJQ/",
    "sender": {
        "address": "dl4pd (a) darc.de",
        "mailman_id": "5c1d7e1b088b471f9673c59e03bccb46",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/5c1d7e1b088b471f9673c59e03bccb46/emails/"
    },
    "sender_name": "Patrick Dohmen",
    "subject": "[amsat-bb] Mounting Coax feed lines to Az/El rotator",
    "date": "2018-08-06T12:21:20Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hey all,\n\nNearly one year ago I installed two cross-yagis on a Hummel Teletower \nwith a YAESU G5400B rotator system. I have made a lot of thoughts on how \nto \"wind\" the coaxial feed lines around both: the azimuth and also the \nelevation axis. With elevation I am very fine, but maybe this is just a \nmatter of time as it seems to be with azimuth!\n\nSome days ago I found some flipping faint/strong signals on my SatNOGS \nstation (https://network.satnogs.org/stations/37/) in the 2m band. First \nI thought this could be some kind of frontend-overloading with the RF \namplifier, but it turned out: this is not!\n\nToday I ran some tests while driving the antenna with my YAESU FT-847 at \nminimum output power (around 1.5W). I could see that with elevation \nrotation everything is fine from 0° to 180° el. Then I tried to turn the \nazimuth and - guess what? - SWR \"jumps\" at around 270° from 1.1 to >4! \nThat truely indicates a broken cable.\n\nAs I installed that wires, I made a short connection of flexible coax \ncable (HIGHFLEXX 7) from the phasing line box, down the mast and made a \nconnection to ECOFLEX 15 running into the shack. The flexible lines are \n\"wrapped\" around the azimuth pipe with a radius of around 30cm. I am not \nsure, but it could be broken just on top of the N-connector... Do I need \nto somehow support that short piece of wrapped line?\n\nAny hints on how to mount the cables to prevent this are really appreciated!\n\n\nKind regards,\n\nPatrick, DL4PD\n\n",
    "attachments": []
}