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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/6J77RN5ZBQQ3XUYUD6MYUEM3HPM4INH7/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "6J77RN5ZBQQ3XUYUD6MYUEM3HPM4INH7",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/NYHRIF5HSZOQRSCQHQ6DCQNIGR2KZCVP/?format=api",
    "sender": {
        "address": "JamesDuffey (a) comcast.net",
        "mailman_id": "16d2718d7d4a47dca8f564d867aacfe2",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/16d2718d7d4a47dca8f564d867aacfe2/emails/?format=api"
    },
    "sender_name": "James Duffey",
    "subject": "[amsat-bb] Re: AO-07 RX  -  TX  more questions...",
    "date": "2007-02-08T01:43:43Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VESZNFS2WQAZIBNXSQ4RQPQWC7FCF7VO/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Tyler - To answer your questions:\n\n\"1)  Can I really pick up AO-7 with my antique Allied Communications \ntube\nreceiver if I put the preamp at the antenna?\"\n\n1. Yes. You should be able to even use the preamp at the receiver, as \nthe sky temperature is pretty high and transmission line loss is not \ntoo great, particularly if you use RG-213 or equivalent. I haven't \nworked Mode A on Oscar 7 this time around, but 25 years ago I received \nit quite nicely with an old FT-101E with a CB preamp of unknown \npedigree at the receiver. The antenna was a loop tacked to the ceiling \nof the shack with about 10 feet of RG8X. I never had trouble hearing \nthe satellite. This was in LA county, so local noise was pretty high.\n\n\"2)  How much EIRP do I need on the uplink?  Can I use my IC-706 \nbarefoot, or\nam I looking at a Mirage amp?  I think the 706 puts out 50 watts on 2\nmeters.  I'd probably be using a 3 element beam for uplink with \nsomething\nlike 9? db gain.  I think I saw something like a 90 watt EIRP would be\nsufficient for the uplink.\"\n\nThe 706 barefoot should be fine, at least on CW. I used to work the \nsatellite with an old Ameco TX62 feeding a 1/4 wave ground plane at the \nend of 50 feet of RG8X. That is probably 20 - 25 Watts EIRP. I had to \nturn down the drive on the TX62 to march the beacon, so I was running \nless power. I suspect that you can run SSB with your setup no problem \nthough.\nJust remember to keep your downlink signal weaker than the beacon.\n\n\"3)  Do I really gain a few more db in gain if I suffer while I put the\nantenna up in the supercold weather here in PA, or is that just an urban\nmyth?   :-)\"\n\nThat is an urban myth. I know, having installed a 160M antenna in -10 F \nweather in SD one year as a foolish youth. - Dr. Megacycle KK6MC/5\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 \nprogram!\nSubscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n\n--\nJames Duffey KK6MC/5\nCedar Crest NM 87008\nDM65\n\n",
    "attachments": []
}