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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/PPWVVPWFOKDDXYGZ6IBPRPTZ4MXNABFZ/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "PPWVVPWFOKDDXYGZ6IBPRPTZ4MXNABFZ",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/KMEJU5J3CLIGNFU3OMLMNX5HCJ2DJGDX/",
    "sender": {
        "address": "hamoen (a) iae.nl",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Henk, PA3GUO",
    "subject": "[amsat-bb] Re: AO51 mode: 23cm SSB up / 70cm FM down ?",
    "date": "2008-09-09T17:02:47Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/5XRVPHVU6DT737OOXVO6CP5WNFQCOWTY/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi Greg !\n\nYou are absolutely right: the objective is to test my 23cm uplink channel.\n\nWe could experiment with reduced power, smaller antennas etc.\nThis is why I would request the receiver of AO51 to be in SSB receive mode.\n\nMy previous antenna was (which didnt make it through AO51):\nhttp://www.pa3guo.com/quad23cm.html\n\nMy current antenna (that I havent tried yet via AO51 mode LU):\nhttp://www.pa3guo.com/cute_ant_pa3guo.jpg\n\nHenk, PA3GUO\nhttp://www.pa3guo.com\n\n\n\n\n\n\n\n>\n> Hi Henk,\n>\n> I always like to try new modes, but are you sure that your uplink isn't working?  I've got an ICOM 1271A, which also\n> runs 10w.  It feeds a homemade 18 turn helix (http://home.wavecable.com/~ko6th/IMG_0138.JPG) after about 60' of 1/2\"\n> hardline and another 10' of RG-8-like stuff to get out of the house, and to run around the rotor.  There can't be\n> much left of the signal after all that, and I have no problem getting into AO-51 with this setup, even at low\n> elevations (long distance).  I heard myself this evening down below 10 degrees with it.\n>\n> Are you able to hear the downlink when others are on the bird?  The hardest part for me with mode LS has been on the\n> \"S\" side - finding the downlink and tracking it through fades and the nasty doppler shift.  My downconverter is off\n> by about 50khz, and the IF receiver is a bit deaf, which doesn't help either.\n>\n> But, if you can hear the downlink, perhaps it is the uplink that is at issue.  What sort of cable run do you have\n> between the rig and the antenna?  How many elements in the quad?\n>\n> Greg  KO6TH\n>\n>\n>\n> ----------------------------------------\n>> Date: Tue, 9 Sep 2008 07:36:41 +0200\n>> From: [email protected]\n>> To: [email protected]\n>> CC: [email protected]\n>> Subject: [amsat-bb]  AO51 mode: 23cm SSB up / 70cm FM down ?\n>>\n>> Dear all,\n>>\n>> I was considering to submit the following mode to the AO51 command team. (I did this already a while ago but my\n>> emails seems to bounce)\n>>\n>> Objective: provide a means for stations with small ERP to test their 23cm uplink channel into AO51.\n>>\n>> Uplink   23cm SSB (!)\n>> Downlink 70cm FM (preferably 435.300)\n>>\n>> With 23cm FM uplink I seem not to have enough ERP to get over the sat. That is, I never made it through the\n>> squelch level of the AO51 receiver (using Kenwood TS2000X/10W, and a small cubicle quad antenna only).\n>>\n>> In SSB mode with the squelch open I could try even CW to see how weak my uplink is. Maybe just below squelch\n>> level, maybe far down in the noise. And: with SSB we can even have multiple stations testing their links at the\n>> same time !\n>>\n>>\n>> Any thoughts of anyone else before I submit this request ?\n>>\n>>\n>> Henk, PA3GUO\n>> (... and I have a 33 elements beam now)\n>>\n>> http://www.pa3guo.com\n>>\n>>\n>>\n>>\n>> _______________________________________________\n>> Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to\n>> support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>\n> _________________________________________________________________\n> Get more out of the Web. Learn 10 hidden secrets of Windows Live.\n> http://windowslive.com/connect/post/jamiethomson.spaces.live.com-Blog-cns!550F681DAD532637!5295.entry?ocid=TXT_TAGLM_WL_domore_092008\n\n\n\n",
    "attachments": []
}