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/JEOXEUJ5SRG75IAMO5LL3ZXK4ELUTAK5/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "MWHPR01MB2640721618CB8C1F0E310FAD98E80@MWHPR01MB2640.prod.exchangelabs.com",
    "message_id_hash": "JEOXEUJ5SRG75IAMO5LL3ZXK4ELUTAK5",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/7M34OFTWQU54XX6GEZLXGLFEPNMUDLTK/?format=api",
    "sender": {
        "address": "va7kbm (a) outlook.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Ken M",
    "subject": "Re: [amsat-bb] input power question",
    "date": "2019-06-16T16:17:19Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/RLKQHNFVOFZ6DC66UXZRT6JAWNWB7WAZ/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/36WNCCS7PVJDKCAYHVIGKGFBYYSHGSUL/?format=api",
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/EQRJ5P27ZBVXUX3LZZKZF3J7VJGVPJXG/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hello Mark,\r\n\r\nPicking up on your comment about UHF pre-amps that \"can be had for less \r\nthan $150 from several manufacturers\", could you provide a list or some \r\nsuggestions. I haven't searched exhaustively but some of seen are north \r\nof $300 and I would love to find a less expensive, but quality, option.\r\n\r\nThanks & 73, Ken, VA7KBM\r\n\r\nOn 2019-06-16 6:46 a.m., Mark D. Johns via AMSAT-BB wrote:\r\n> This is a very common issue for newcomers to the linear satellites.\r\n> Almost every pass, there is someone calling CQ over and over again\r\n> with a loud signal, but completely oblivious to the several stations\r\n> trying to answer them.\r\n>\r\n> Downlinks on the linear satellites, especially on UHF, are MUCH weaker\r\n> than on the FM satellites. Remember that the transmit power of the\r\n> satellite is being distributed across an entire passband that many\r\n> stations are sharing -- unlike FM, where all the power is just on one\r\n> frequency for one station at a time (ideally).\r\n>\r\n> You are going to need the best, low-loss feedline you can afford for\r\n> UHF, and that feedline needs to be as short as possible. If your\r\n> feedline is more than about 50 feet (or about 15 meters) you are going\r\n> to want to have a pre-amplifier very near the antenna. A good pre-amp,\r\n> with RF switching so that you don't accidentally blow it up by\r\n> transmitting through it, can be had for less than $150 from several\r\n> manufacturers. Or, there are designs around to roll your own, if you\r\n> are good at that sort of thing.\r\n>\r\n> Good luck, and hope to work you on the linear sats very soon!\r\n> --\r\n> Mark D. Johns\r\n> KØJM / MØGZO / ex-9H3DJ / ex-KØMDJ\r\n> Brooklyn Park, MN USA   EN35hd\r\n> -----------------------------------------------\r\n> \"Heaven goes by favor; if it went by merit,\r\n>     you would stay out and your dog would go in.\"\r\n>      ---Mark Twain\r\n>\r\n> On Sun, Jun 16, 2019 at 7:26 AM WB8PFZ via AMSAT-BB <[email protected]> wrote:\r\n>> I have completed my sat station but am having trouble hearing myself. I have checked cables and antenna ( M2) sat antenna. All seems well with low SWR. I can hear on the 2 meter downlink. How much power is needed on the UHF uplink? Hope to figure this out shortly. This is being done on the SSB sats. Thanks Mike WB8PFZ\r\n>> _______________________________________________\r\n>> Sent via [email protected]. AMSAT-NA makes this open forum available\r\n>> to all interested persons worldwide without requiring membership. Opinions expressed\r\n>> are solely those of the author, and do not reflect the official views of AMSAT-NA.\r\n>> Not an AMSAT-NA member? Join now to support the amateur satellite program!\r\n>> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb\r\n> _______________________________________________\r\n> Sent via [email protected]. AMSAT-NA makes this open forum available\r\n> to all interested persons worldwide without requiring membership. Opinions expressed\r\n> are solely those of the author, and do not reflect the official views of AMSAT-NA.\r\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\r\n> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb\r\n",
    "attachments": []
}