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GET /hyperkitty/api/list/[email protected]/email/UUHXRUTZE4B3GZMHSXWM3V4LVCPGK4PZ/
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/UUHXRUTZE4B3GZMHSXWM3V4LVCPGK4PZ/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "[email protected]", "message_id_hash": "UUHXRUTZE4B3GZMHSXWM3V4LVCPGK4PZ", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/XAXPLKAJ6B6P6GW254RAYOBQOB2SQZGB/", "sender": { "address": "py2rn (a) arrl.net", "mailman_id": null, "emails": null }, "sender_name": "Eduardo PY2RN", "subject": "Re: [amsat-bb] New AO7 Distance Record", "date": "2016-02-17T13:59:17Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/A73WUQ45UZJDU3CYUGZK4SOW7LSRIETM/", "children": [ "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/BYZPQTUJ7OQRYYQQOIBBEVPQBFYWWVZA/" ], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Steve, at this side\nRX: Funcube pro plus + SDR# V.1430 (with great NB capabilities) + Yagi-Uda 11el CP + Mirage KP-2 pre-amp.\nTX: TS-2000x + Yagi-Uda 20el CPTracked by Satellite Tracking embedded into SDR-RADIO V2 software suite + GS-232/G-5400\nCoax: RFS RGC213 15mts longAnd a clear view to my N / NW bound which allows to hear a little after sat LOS most of times.\nPut together again an old P3 sat setup sitting in storage for many years, just added the SDR fun to it.\n\nTks & 73\nEduardo PY2RN\n\n\n From: Stephen E. Belter <[email protected]>\n To: Eduardo PY2RN <[email protected]>; Dave Swanson <[email protected]>; \"[email protected]\" <[email protected]> \n Sent: Wednesday, February 17, 2016 12:44 AM\n Subject: Re: [amsat-bb] New AO7 Distance Record\n \nGentlemen:\n\nCongratulations! \n\nWould you describe your stations? Radios, antennas, coax, preamps,\nsoftware?\n\nThanks!\n\n73, Steve N9IP\n--\nSteve Belter, [email protected]\n\n\n\nOn 2/16/16, 8:46 PM, \"AMSAT-BB on behalf of Eduardo PY2RN\"\n<[email protected] on behalf of [email protected]> wrote:\n\n>Thanks Dave for the QSO and well done with all the persistence.\n>\n>It is always good to double check even when everything is saying that it\n>wouldn't be possible, even the computer shouting \"satellite is not\n>visible!\" over your signal :o)\n>73s\n>Eduardo PY2RN\n>\n> From: Dave Swanson <[email protected]>\n> To: [email protected]\n> Sent: Tuesday, February 16, 2016 8:14 PM\n> Subject: [amsat-bb] New AO7 Distance Record\n> \n>Satellite Friends and Colleagues,\n>\n>I wanted to share with everyone that on February 10th, at 2009UTC I made\n>a scheduled contact with Eduardo, PY2RN, using AO-7 Mode B, from\n>'Shinnal Mountain' just west of Little Rock, Arkansas. My 10 digit grid\n>locator for the contact was EM34ST20SC, and Eduardo's station is located\n>at GG66LW77JQ in Vinhedo/SP, Brazil. Using the\n>http://no.nonsense.ee/qth/map.html website for reference, this equates\n>to 8030.895 km which we believe to be a new record for AO-7 Mode B. I've\n>been extremely busy this past week, but I had a few folks request that I\n>share a little background behind the contact, so here we go.\n>\n>Back on January 24th, I was on an AO-7(B) pass looking for Gustavo,\n>PT9BM. While not a record distance, Gustavo's QTH is just shy of 7500km\n>away from me, so I was up on my mountain, specifically in a spot with\n>great a great southeastern view of the Horizon. As the bird came into\n>view, while scanning the passband, I heard Eduardo, PY2RN, calling CQ. I\n>tried to answer him, but his signal disappeared quickly after that, and\n>I went ahead and had a great QSO with Gustavo, and didn't think anything\n>else of it until later that night when I decided to look up the station\n>I had heard. To my astonishment, Eduardo was 8030km away, which was way\n>beyond the theoretical range AO-7, even with elevation assistance. I\n>promptly emailed Eduardo and we both agreed to try and make a contact,\n>even though the math said it shouldn't be possible.\n>\n>At this point the random luck that had let me hear Eduardo on the 24th\n>seemed to elude us. We attempted contacts on the 26th, 28th, and 30th\n>all to no avail. After recalculating windows, our next shot was on\n>February 8th. WinListen (from Sat32pc) calculated a 3 second window on\n>the 8th, followed by 5 seconds on the 10th. The day of the 8th came, and\n>we prepared for the attempt. Murphy once again seemed to haunt us\n>though, as we successfully heard the calls and grids of each other, but\n>strong CW QRM was hitting the bird so hard that the intelligibility was\n>low and, more importantly, neither of us had a camera running. We\n>decided to not count the QSO due to these reasons. The good news was\n>though, we both heard each other (the first time that had happened) and\n>our frequency coordination was spot on. We knew it could be done, we\n>just needed a little luck.\n>\n>Finally, on February 10th, we got a bit of a break. We had already\n>determined that 5 seconds was simply not enough time to do a proper \"QSL\n>thanks for the grid, have a great day\" type of chat, so we both agreed\n>to simply repeat 'your call / my call / grid / report' rapidly, much in\n>the same way a digital or contest contact is made. At 2009UTC, both\n>stations cleanly heard the others call and grid, completing the\n>contact. It was extremely rapid, and very weak, but clear. Eduardo's\n>side of the QSO turned out way better than mine did, and he has uploaded\n>a recording of it to youtube here: https://youtu.be/pTGSlaY7K7A\n>\n>After all my work towards low-elevation contacts from mountain-tops, I\n>think this is approaching the limits of what can be done on AO-7. This\n>was by far the hardest sked I've ever attempted, and with the contact\n>window measured in mere seconds, it leaves absolutely no room for error.\n>Had I not heard Eduardo's call at random on the attempt with Gustavo, I\n>doubt I would have even pursued this as something that was possible.\n>That said, wow.. what a rush\n>\n>Big thanks to Eduardo, PY2RN, for humoring my obsession with making\n>ultra long-distance QSOs on the birds, and for sticking with it until we\n>finally made it work. Good DX my friend. Also thanks to Gustavo (PT9BM)\n>for persuading me to point my arrow to the South, and Drew (KO4MA) for\n>acting as a spotter during one of the passes to see just how far apart\n>we were from each other. Appreciate it guys.\n>\n>If anyone has any questions or comments, I'm happy to field them. Until\n>then, catch you on the birds! 73!\n>\n>-Dave, KG5CCI\n>_______________________________________________\n>Sent via [email protected]. AMSAT-NA makes this open forum available\n>to all interested persons worldwide without requiring membership.\n>Opinions expressed\n>are solely those of the author, and do not reflect the official views of\n>AMSAT-NA.\n>Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>\n>\n> \n>_______________________________________________\n>Sent via [email protected]. AMSAT-NA makes this open forum available\n>to all interested persons worldwide without requiring membership.\n>Opinions expressed\n>are solely those of the author, and do not reflect the official views of\n>AMSAT-NA.\n>Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n\n\n \n", "attachments": [] }