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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/5JO23KWSXWR7DJL3CS2BRAHST63WYX6G/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "5JO23KWSXWR7DJL3CS2BRAHST63WYX6G",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/ZPEMJRSTCHKAMVJNLKPK6QO4FPSLSWJW/?format=api",
    "sender": {
        "address": "gary_mayfield (a) hotmail.com",
        "mailman_id": "fe442cdc520e4857a9168b9182091295",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/fe442cdc520e4857a9168b9182091295/emails/?format=api"
    },
    "sender_name": "Gary \"Joe\" Mayfield",
    "subject": "[amsat-bb] Re: Gulf Alpha Antenna Model No.2M 70CM Sat. (Dual\tBandAntenna)",
    "date": "2008-12-26T13:28:21Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/ZPEMJRSTCHKAMVJNLKPK6QO4FPSLSWJW/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/IWXOVW3WHAT3M5A2DM5EITCAHUL7EH6O/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Guy,\n\n     I have the previous version of the Gulf Alpha dual band.  We use it at\nfield day every year and it performs well.  Your idea to add the pre-amp is\nwise as it is a little short for some of the UHF downlink signals.  \n\n     You may also want to plan for some classic mode J de-sense issues which\naren't really a factor of the antenna as much as a reality of listening on\nthe third harmonic of your transmit signal.\n\n     On the whole it has been a great antenna, and that sucker is built like\na battleship.  I wish he had a larger line of antennas as he builds a VERY\nsolid product.  I believe Gulf Alpha is a one man shop so there may be some\nlead time as well, but definitely worth the wait!\n\n73,\nJoe kk0sd\n\n-----Original Message-----\nFrom: [email protected] [mailto:[email protected]] On\nBehalf Of Guy Brauning\nSent: Thursday, December 25, 2008 7:44 PM\nTo: [email protected]\nSubject: [amsat-bb] Gulf Alpha Antenna Model No.2M 70CM Sat. (Dual\nBandAntenna)\n\nHello and thanks for reading this.  I am looking for some \"Owner Experience\"\nbefore making a decision about buying one of the Gulf Alpha dual band\nsatellite antennas.  I know the antenna is a compromise compared to a pair\nof circular polarized yagis; however, I am looking for a less expensive\nalternative for a basic 2M/70CM base set-up. My only experience with the\nsatellites has been with handheld/portable radios (FT-60R and FT-817ND) and\nthe Arrow and ELK handheld antennas.  My guess is that the Gulf Alpha dual\nband satellite antenna (installed above obstructions and with an AZ rotator\n/ low loss feed lines / and a 70CM mast mounted pre-amp) would be comparable\nif not considerably better than the handheld Arrow/ELK for FM work on AO-51\nand SO-51 (for passes at or below 40 degrees max elevation) but I would also\nlike to work some of the linear sats on SSB/CW and I don't know if the\nantenna would meet that need. (I already have a 2Meter all mode in addition\nto the FT-817 as well as a refurbished CD-44 rotor.)  If this antenna would\nsupport reliable CW/SSB contacts on the linear satellites, it would be a\ngood fit.  I would install the antenna at approximately 25 feet in height,\nleave it fixed at 15 degs elevation using the supplied mast mount, and\nrotate it with a CD-44 rotator.  I plan on using LMR-600 coax for the 432\nrun and LMR-400U for the 2 meter run (Total length for each run about 30 -\n40 feet).  I would also use an AR2 mast mounted 432 preamp and Polyphasers\nat the shack entry with appropriate jumpers (best loss specs vs. needed\nflexibility) from the Polyphasers to the radios.  Radios would be a Yaesu\nFT-290R MKII (2 MTR All-Mode) and a Yaesu FT-817ND for 432.  I'm looking for\nsomeone with experience using the Gulf Alpha to let me know their opinion of\nhow well the antenna might play given my anticipated installation specifics.\n\n\n \n\nThanks for your help!\n\n \n\nGuy \n\n N3SCR\n\n \n\n_______________________________________________\nSent via [email protected]. Opinions expressed are those of the author.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n",
    "attachments": []
}