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GET /hyperkitty/api/list/[email protected]/email/N22QDJKVOLZKB3YZ4VYBQTDJTNLZ3FKB/
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/N22QDJKVOLZKB3YZ4VYBQTDJTNLZ3FKB/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "[email protected]", "message_id_hash": "N22QDJKVOLZKB3YZ4VYBQTDJTNLZ3FKB", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/N22QDJKVOLZKB3YZ4VYBQTDJTNLZ3FKB/", "sender": { "address": "davegoncalves (a) gmail.com", "mailman_id": "f97ac5d9d47c4e819df184cb1822b3a7", "emails": "https://mailman.amsat.org/hyperkitty/api/sender/f97ac5d9d47c4e819df184cb1822b3a7/emails/" }, "sender_name": "David Goncalves", "subject": "[amsat-bb] Re: NMARS", "date": "2007-05-14T15:15:25Z", "parent": null, "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": " Amatuer Satellite Fans,\n\nRe-entry for RAFT will occur not too long from now; it was launched as the\nsame time as MARSCOM (RAFT's mass will keep it in orbit longer). While a\ncouple people have tried to turn on the RADAR transponder over the Southern\nU.S (thanks to CAPE team and others)., we have yet to hear a successful\ndownlink of the RADAR reciever audio as it passes over the fence. Please\nread the attachment below; are there any hams who can help? I, and the XP217\nteam, who built the RADAR transponder, really want to see this device work -\nwe know it should, we know the oscillator is working (thanks to our European\nfriends), but we don't yet know if the device can downlink the RADAR audio\ntone.\n\nCan nobody help? Whether it is a single person with all the equipment, or a\nteam of people working together over the phone to manage all the steps\nrequired, if there are hams in the Sothern U.S., technically able to command\nthe satellite, turn on the transponder, and listen and record the FM\ndownlink, we are interested in hearing from them. Contact Bob Bruninga, or\nmyself.\n\n\nDavid Goncalves\nW1EUJ\n\n------------------------------------------------------------------------------------------------------------------\n\nThe RAFT Radar Transponder has been detected. See plot:\nhttp://www.ew.usna.edu/~bruninga/craft/XP217-PE1ITR4feb07.JPG\n\nAlthough the 4 milliwatt RAFT Radar Fence oscillator was\ndesigned to be heard by the collosal 2 mile long 30 dB gain\nreceive antenna of the Radar Fence across the southern USA,\nPE1ITR was able to detect the oscillator on his own ground\nstation.\n\nWe are still welcoming GOOD OSCAR class AMSAT stations near the\nRADAR fence across the southern USA (Arizona through Texas to\nGeorgia) who have good 2 meter beams, to command on the RAFT\nRadar fence transponder so that we can make our first Radar\nFence detection. RAFT requires a good 2m beam station to\noperate it.\n\nThe primary objective is for RAFT's radar xponder to HEAR the\nradar fence as it flies through it. Since this is not\ndetectible here at USNA due to our latitude, we are dependent on\nvolunteer ground stations in the southern USA to activate the\nRAFT transponder at precisely the correct time to make this\ndetection. There is only one good pass per station in the\nevening hours and so it is slow going.\n\nBut the detection above, gives great confidence in the primary\nobjective..\n\nFor more on RAFT's radar Fence Transponder which is a model for\nfuture small satellites to be able to detect their own passage\nthrough the fence, see the main RAFT web page about half way\ndown the page:\nhttp://www.ew.usna.edu/~bruninga/raft.html\n\n\n\n-- \nDavid Goncalves\n", "attachments": [] }