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{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/HXE5IGS2WAYX42Y7LD3RO3D5F23RCTWA/?format=api", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api", "message_id": "[email protected]", "message_id_hash": "HXE5IGS2WAYX42Y7LD3RO3D5F23RCTWA", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/GTKWY3BRMPSHUXCDO43JS46DAHGMCMWS/?format=api", "sender": { "address": "zack.kd8ksn (a) hotmail.com", "mailman_id": null, "emails": null }, "sender_name": "Zachary Beougher", "subject": "[amsat-bb] Re: Fm satellite Frequencies and Doppler", "date": "2011-05-16T21:25:59Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/HOORV7ZEVDW4JRA5EI25N6BLB5VGSCOG/?format=api", "children": [ "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/Y4ON7L5V7C4WIOFQEF6EIMG6WHWSZPJP/?format=api", "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/HWM6E3ACZOTVVYG43BPNBVVM7WC7CTWQ/?format=api" ], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Alexandar,\n\nI am not sure how you have it programmed into the radio so far, but I would \nprogram 5 memory frequencies into your HT:\n\n(AO27)\n\n436.805 (AOS)\n436.800\n436.795 (TCA - Time Of Closest Approach)\n436.790\n436.785 (LOS)\n\nSince AO27 switches off way before LOS, you will probably never need the \nlast frequency - 436.785 - but these would be the common frequency steps for \na typical bird like AO51, SO50, etc. Don't be afraid to make adjustments \neither. I find that to hear the 30 sec. of TLM right before AO27 switches \nto VOX I have to be at 436.810. This is probably more a feature of the \nradio itself. If you are having trouble hear at AOS or LOS, try adjusting \nyour downlink by 5kHz.\n\nYou can also add alpha-numeric tags to your frequencies to keep them in \norder:\n\nAO27-1\nAO27-2\nAO27-TCA\nAO27-4\nAO27-5\n\nThere are many different variations you can choose from.\n\n73!\n\nZack\nKD8KSN\n\n\n\n-----Original Message----- \nFrom: Alexander Sack\nSent: Monday, May 16, 2011 4:23 PM\nTo: Clint Bradford\nCc: Clint Bradford ; [email protected]\nSubject: [amsat-bb] Re: Fm satellite Frequencies and Doppler\n\nOn Mon, May 16, 2011 at 3:50 PM, Clint Bradford <[email protected]> \nwrote:\n>>> ... go to AMSAT's sat status page ...\n>\n> Personally, I prefer to get folks in the habit of checking the actual \n> control team pages for the various FM birds. That leaves any \"middlemen\" \n> and third=party Web site editing delays out of the equation.\n>\n> I mean, what better info is there than that published by those who \n> actually control the satellites?\n\n\nI too am a beginner and wondered about how to calculate doppler and/or\ndetermine a rough estimation based on pass information (elevation/az,\netc.). I tend to start about 10 kHz up on any given pass which seems\nto be a reasonable approximation for most of the birds so far (I\nstarted this way because I followed the AO-27 FAQ).\n\nMy biggest challenge is finding the signal while adjusting for\ndoppler. Once I get it though, I'm good for the rest of the pass!\n:-)\n\n-aps\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\n", "attachments": [] }