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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/LQYK6BY2NFMEJLYFTOLI2HUA2NSQDNDX/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "1634377643.171623.1286575576529.JavaMail.root@sz0126a.emeryville.ca.mail.comcast.net",
    "message_id_hash": "LQYK6BY2NFMEJLYFTOLI2HUA2NSQDNDX",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/LQYK6BY2NFMEJLYFTOLI2HUA2NSQDNDX/?format=api",
    "sender": {
        "address": "w7lrd (a) comcast.net",
        "mailman_id": "717aa2a241704c7497e9abd8c983f6b7",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/717aa2a241704c7497e9abd8c983f6b7/emails/?format=api"
    },
    "sender_name": "Bob- W7LRD",
    "subject": "[amsat-bb] Re: AO-7 mode A experieces from KP35",
    "date": "2010-10-08T22:06:16Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "\n\nHello Mika and AO-7 fans \n\nI to have made many attempts at AO-7 mode A.  These efforts go back to the days of RS-15.  I have noticed that my HF antenna for 10M is a 4 element cubical quad.  It is cut for a frequency much lower in the band.  As a result the reflector seems to act more like a director at 29.45Mhz.  Therefore  signals are better off the back of my quad than the front.   From Seattle Wa. CN87 I have made several attempts at JA contacts.  Only one time I was able to copy a partial call from JA.  Local U.S contacts are not a problem.  When it comes to stretching the footprint that's where the \"fun\" begins.  Mode A I think requires a bit more uplink power.  If we ever get more sunspots propagation on the 10 meter  gets interesting.  I believe it was RS-13 that had a 15M uplink and a 10M downlink.  You could work it at times way byond the horizon.  Ahhh the \"good\" old days!  Mika, send me note from time to time if you want to try a mode A attempt.  We have done it many times on mode B.  Good luck. \n\n73 Bob W7LRD \n\nCN87wk \n\n\n----- Original Message ----- \nFrom: \"Mika Siira\" <[email protected]> \nTo: [email protected] \nSent: Friday, October 8, 2010 2:09:44 PM \nSubject: [amsat-bb]  AO-7 mode A experieces from KP35 \n\nHello folks, \n\nI have been mostly mode B user on AO- 7 satellite but \ntoday I decided to try mode A  from my summer QTH. I have two \nantennas \nfor downlink (vertical and Spiderbeam with four elements for 28MHz) and \nno problems for receiving signals from the sat. Of course because of \nthe polarsation change switching between these antennas during the pass \ngives best results. \nFor the uplink I have used FT-817 (5w power) to 9- \nelement yagi, unfortunately SWR is high above 145MHz. On every pass   \nthat I tried today I have heard my own signal on downlink (weak but \nheard). \nWhat is the recommended power level for mode A (if there is \none)? From my previous visits to my summer QTH I have heard some \njapanese stations and satations from stateside, so this mode would be \nworth to try. On mode B from my city location \n5-15 watts is well \nenough. What kind of antennas people are using on mode A? \n\nMika, OH8MBN \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",
    "attachments": []
}