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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/T77TQ5DBFY6VQM2YN6PCLZLRNAAQMFZI/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "T77TQ5DBFY6VQM2YN6PCLZLRNAAQMFZI",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/S7R4WZ4BEUY5PDZB7UH742QWT2JBMGR2/?format=api",
    "sender": {
        "address": "sangatsingh (a) gmail.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Sangat Singh",
    "subject": "[amsat-bb] Re: Kenpro elevation rotor repair",
    "date": "2008-09-27T16:38:00Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/4U5MAYZYHSSTO7UXZ46MZBJ4D525UKJP/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/Z7MLSBBZVGWQ7JB2BG634542AUZCY73M/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Sebastian,\nI had a similar problem. In my case I found that the 24 volt motor had\npacked up.  Since I had another Elevation Rotator with the faulty pot\nsitting on my bench for half a century,  I swapped the motor and it worked.\n The motor is easily removed.  Please remove the 4 screws that hold the\nmotor and then try powering up and see if the motor works.  I suppose you\nwon't have a spare motor. I am trying to get the faulty motor rewired.  Our\nlocal talent can do wonderful things.\n\nYou might consult Roy Welch who has a great knowledge on ailing Yaesu\nrotators.  I am sure he has seen this mail and may have some valuable\nsuggestions.  Do share your experience if you manage to fix this problem.\n\nOpening nuts is a big problem and your Motor Cycle workshop should be able\nto help.  I got mine too opened that way.\n\n73\n\nSangat, 9M2SS\n\n2008/9/27 Sebastian <[email protected]>\n\n> Well I had been back on the birds for the last 3 months or so, and\n> while I was getting ready for an AO-16 pass a few days ago, my\n> elevation rotor on my Yaesu G-5400B stopped at about 10 degrees.\n>\n> That's it.  It won't go back down or up.\n>\n> So I checked the wiring on the rotor, everything appeared fine.  I\n> removed the elevation rotor from the azimuthal, and took it inside.  I\n> made a small patch cord to go from the control box to the rotor, but\n> no luck.  All I get is the display of the elevation of about 10\n> degrees, and I hear a little hum when I attempt to move it up or\n> down.  This tells me that the potentiometer is probably good, and the\n> motor is receiving power.\n>\n> I've removed the small nameplate on the side, and there is no water\n> inside, and I can see the ball bears; there doesn't appear to be any\n> rust inside.  I also removed the terminal assembly in case one of the\n> wire had come loose, or had a cold solder joint, but I didn't find any\n> problems there.  Looking at the diagram of the rotor, there appears to\n> only be a small 24 volt motor which turns this; along with numerous\n> mechanical parts.\n>\n> So the question is.  Before I send this to Yaesu, has anyone had this\n> problem before, is it a minor one (something that I could fix myself),\n> or is best left to Yaesu?  Before anyone mentions, Norm's no longer\n> services these rotors.  The four 'screws' that hold the two parts are\n> impossible for me to loosen.  I would have to use a vice, but I do\n> have a friend with a motorcycle repair business who I'm sure could\n> open it for me in 60 seconds.  To me, this looks like a jigsaw puzzle\n> by looking at the diagram.\n>\n> The rotor was in service for about a couple of years back in the early\n> 90s.  It then sat inside without any use, up until a few months ago.\n> If the consensus is to send it to Yaesu, should I bother to send in\n> the azimuthal rotor, or should I follow the \"don't fix it if it aint\n> broken\" rule?\n> _______________________________________________\n> Sent via [email protected]. Opinions expressed are those of the author.\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>\n\n\n\n-- \nSangat Singh\n53, Jln. Perdana\nNational Planetarium\n50480 Kuala Lumpur (MALAYSIA)\nMobile: +60122838873\nOffice: +60322787388\nFAX: +60322738873\nSkype ID: sukhija\n",
    "attachments": []
}