Email Detail

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/NDLKTKWQPQGEX3JWXUXESBI5HSNR7UW3/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "NDLKTKWQPQGEX3JWXUXESBI5HSNR7UW3",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/YDP3LSYECVHELUHL6LMGH7IU2KRRX3HQ/?format=api",
    "sender": {
        "address": "broberts (a) mta.ca",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Bruce Robertson",
    "subject": "[amsat-bb] Re: Station not coming together - the full post (sorry\tfor repost, reply to this)",
    "date": "2007-03-07T23:33:48Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/YDP3LSYECVHELUHL6LMGH7IU2KRRX3HQ/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/QY2ZXE3DGNWJW75UVNJXPPQH2XWXMOY3/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Quoting Jonny 290 <[email protected]>:\n\n> Lying in bed last night, I realized my solution to the 'noisy rotator'\n> issue\n> that's stopping me from putting up yagis.\n> \n> Ground mounted rotator!\n> \n> Pound a 1.25\" steel pipe in the ground, bolt the rotator to that at\n> knee\n> level, run the mast up.\n> \n> Here's my thinking - 15 feet of PVC with a short yagi on top, mounted at\n> 30\n> degrees elevation, give or take. At the 10 foot 'eave' level, I create\n> some\n> sort of crude bearing using PVC that allows the pipe to spin, but not\n> wobble. Bolt that to the eaves and use it as the anchor point up top.\n> The\n> pipe could down to just above ground level, where it's connected to the\n> rotator output.\n> \n> I'm in a valley so winds never get higher than 40 mph gusts, and the\n> PVC\n> should have plenty of 'give' to not mess up during a wind gust. I've\n> got\n> stuff right nowon a 12 foot PVC mast that isn't even cemented together,\n> and\n> it's tough.\n> \n> This would allow me a steerable antenna without bothering my roommate.\n> The\n> rotator noise should be almost inaudible when it's mounted down so low\n> (there won't be a window in the path to easily conduct noise) and if\n> it's\n> still an issue, it'd only take an hour to build an MDF box  with a hole\n> in\n> the top to cover, insulate and protect the rotator.\n> \n> Think it'll work? :D\n\nMatt:\n\nSounds like a good idea. I was going to write to say that I have a similar\nset-up, with a Orbit 360 TV-type rotor only about 5 feet outside the window\nof the room I use as a shack. When it rotates, it is quite audible, and if\nI were trying to do work here I would find it distracting. If you undertake\nthe above contraption, I would recommend putting the bushing on the side of\nthe house first, before pounding the pipe in the ground :-)\n\nA gain antenna really does make for a more forgiving setup. Be careful not\nto make the beams too long: you'll lose the high elevation and you'll go\ncrazy tweaking your rotor. My 8 element 70cm does nicely with fixed\nelevation. I also recommend foregoing circular polarization in these\nantennas. See my discussion at:\nhttp://www.amsat.org/amsat/archive/amsat-bb/10day/msg56267.html\n(I can't seem to find a permanent link for archived messages.)\n\nYou were thinking of buying a downconverter for your HF rig. One further\noption for exploring satellite communications is the FT-817. These can be\nfound second-hand quite cheaply on Ebay and other sources. I used a pair of\nthem for some time on LEOs, and though a bit low on power,  they allow you\nto walk outside and test your antennas in a handheld, short cable arrangement. \n\nAnd for a satellite you might be able to work right now, check out AO-7 in\nmode A, every other day right now. (Consult\nhttp://www.planetemily.com/ao7/ao7log.php\nto see what mode is up today.) My 10m vertical fed by 30m of RG-8x can hear\nits telemetry, CW and some SSB. A loop around my shack might do even\nbetter. Last year, my HF antenna was a horizontal long wire, and I never\ndid hear AO-7 because of the fragmented azimuthal pattern on 10m.\n\nSince you seem to be interested in doing things yourself, you really would\nenjoy the Davidoff book I recommended earlier, not to mention the AMSAT\nJournal, whose quality is remarkably high and which is a perk of membership\nin AMSAT-NA.\n\n73, Bruce VE9QRP\n",
    "attachments": []
}