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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/LJ4UESX2JJMCNJORJT2CNGKHNYOB6UNS/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "LJ4UESX2JJMCNJORJT2CNGKHNYOB6UNS",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/Z3ZLJK67WS2EBWWND3HYXSBNM5R5WBTI/",
    "sender": {
        "address": "broberts (a) mta.ca",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Bruce Robertson",
    "subject": "[amsat-bb] Re: Bob's Message",
    "date": "2007-12-14T00:03:34Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/Z3ZLJK67WS2EBWWND3HYXSBNM5R5WBTI/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Quoting Joe Krepps <[email protected]>:\n\n> > Dave Guimont wrote:\n> > \n> > \n> >>>The reason for Echo (a two-user FM voice) escapes me also, Greg.\n> >>>\n> >>>To me, money down the tubes...\n> >>>  \n> >>>\n> > \n> > I'll  agree with that one also,  a whole bird with one \"Channel\" \n> seems \n> > like a HUGE waste.  Cool?  Yeah,,  but single user uh,,  nah.\n> \n> I respectfully disagree. I'm very happy to get involved with birds for \n> the second time, thanks to Echo. There was a time when I had an IC-820H,\n> \n> Yaesu dual axis rotors, HyGain(?) CPs for 2m & 70cm. It was all just a \n> bit much. This was (probably) before MacDoppler so I was struggling with\n> \n> tracking and predictions. It sure was cool looking but I never got my \n> use out of it. Sold the stuff for a song. Not a good song either!\n> \n> Getting my feet wet...again...with an Arrow and my FT-817ND and/or \n> FT-470 is perfect for my current situation! I wouldn't be on this list \n> if it were not for the FM birds.\n> \n> If no one else will stand up for them, I will! Not arguing the value of\n> \n> HEOs but my sincere thanks to those who made the LEOs possible!\n> \n> If it gets more people involved, why not? If it keeps them around for \n> HEOs, isn't that good? \"Real soon now\" I'd love to take a stab at AO-7 \n> with my setup + extra bits (preamp, maybe a bigger antenna.), correct \n> modes of course. Will I get many complaints if I only shoot 5w, CW/SSB,\n> \n> at AO-7 from my LEO rig???? I'm really a 20m guy. (Well, what else can \n> you do with 5w when you're mobile?)\n> \n> 73s,\n> Joe WB3CFN\n> _______________________________________________\n\nTo start with your last question, I think it's accurate to say that nobody\ncomplains when a station is too far into the noise. I worked AO-7 with a\npair of FT-817s for over a year and had a hoot, though 5w up on a small\nyagi will do better with CW than SSB. Sometimes folks will tell you they\nsimply can't hear you, and then you can look at the map and see if this\nmeans your setup is better or if they are dealing with greater path loss.\nOther times, you struggle and your companion doesn't, and that creates new\nquestions: is my beam pointing off, do I need better cable. \n\nIn my experience, AO-7 is quite variable in the downlink power for a given\nuplink power. This experience is gained not only when there are others on\nthe band who might be changing the available power, but also testing it in\nrelative silence. Experimentation is the name of the game.\n\nYou didn't mention VO-52: now there's a wonderful SSB bird to use as a\nstepping stone from the FM ones. Point your Arrow in the right general\ndirection and look for the beacon, which is a continuous tone. It will, of\ncourse, be the only one that is slowly dropping across the band, so you can\ndistinguish it from the tones that come from your neighbor's flukey VCR :-)\n Many have had success operating into it half-duplex handheld with a\nFT-817. I'd like to wire up something like the Nokia 810 pocket computer to\ndo automatic doppler in the field. The constant-tone beacon lends itself to\nmany interesting experiments, in my case showing just how badly the house\nattenuates 2m when the bird dips down behind it!\n\nTo address some of the recent general discussion on the list, it is very\nexciting that emerging space-faring nations like India and China are\nfollowing in the US's footsteps by using amateur payloads to improve their\ninternational stature and to educate their people. Just as in the US, it is\npossible that these nations will eventually launch amateur HEO's for the\nsame purpose before their capabilities are fully commercialized. We should\ncheer them, support them as they wish us to, and make grateful use of their\nequipment. Go CAS-1, go Hamsat2!\n\nFurthermore, if we use this forum to announce or just bounce around cool\nideas for payloads and modes, we just might see them implemented in Asian\nbirds in the near future. That's why Eaglepedia is a great project, and why\nI think we all feel that Fred's work is by no means lost, even if it\ndoesn't fly exactly as he built it this past year. With any luck, the\ndesigned found there will make their way into not only a P4 bird, but into\nother projects around the world.\n\nOh, and the PSLV launch that will include Delfi-C3 is now scheduled for\naround Jan 25th, not the earlier date I mentioned before. I should know to\nalways consult W0RPK's excellent site\nhttp://showcase.netins.net/web/wallio/CubeSat.htm\nbefore posting.\n\n73, Bruce\nVE9QRP\n",
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}