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{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/2AAHKDDB3ICUG66HG2P7LD24MRQ4NBDM/?format=api", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api", "message_id": "[email protected]", "message_id_hash": "2AAHKDDB3ICUG66HG2P7LD24MRQ4NBDM", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/RJRBBEQ5TZQVS5WULMUJILG3CB7VF54Z/?format=api", "sender": { "address": "hans.bx2abt (a) msa.hinet.net", "mailman_id": null, "emails": null }, "sender_name": "Hans BX2ABT", "subject": "Re: [amsat-bb] How to digipeat?", "date": "2019-09-08T15:09:13Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/7WBWRMNH3M7GFHZ5RKCXCIEL5CHBQ2E2/?format=api", "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "On 09/08/2019 02:13 PM, Robert MacHale via AMSAT-BB wrote:\n> Hey Hons,\n> It seems like there might be a need for a YouTube video explaining the basics of Satellite APRS.\nYes, and one on UISS. There are so many options and being (still) an \noutsider it is daunting.\n> Learning APRS on 144.390 MHz is a good place to start. This might be the best way to learn how to work with digipeaters.\nTerrestrial APRS I do understand a bit. At least I get that you can send \na message and it will get digipeated via many digipeaters till it gets \nto its destination. Never done it, but it is suppose to work like that, \nright? When sending out your location it will travel only so far. Sat \nAPRS seems not to have this capability of storing a digipeat and then \nrebroadcasting it to the next digipeater, or am I wrong with that \nassumption?\n> Satellite APRS has many nuances that make it very different than regular APRS. For example, interference on 145.825 MHz needs to be mitigated when trying to receive faint signals. One thing that helps is lowering the antenna either below a wood fence line or below a wooded tree line or being surrounded by 10 degree hills.\nUnfortunately I can't do much about the QRM. It's from a big electronic \nbillboard a couple of hundred meters away. Knowing the attitude of the \nlocal FCC and the government here and being \"just\" an amateur I doubt \nthat they will take action to clean it up. Having a good F/B gain will \nhelp, so my next step will be in building a better 2m yagi.\n> These sites might be helpful:\n> http://www.aprsat.com/predict - this shows upcoming Satellite APRS passes for your area.\n> http://www.spaceCommunicator.club/aprs - this reports Satellite APRS packets from all satellites combined into one place.\nAbout that last site: are the packets listed there received at the \nlocation of W7KKE, or are they aggregated from different sources?\n> You're ahead of me on Falconsat-3; I haven't got that to work yet on 9600 bps. I mostly work with 1200 bps on 145.825 MHz.\nIt took me a while to get it working and I'm writing tutorial about the \nsetup on my web site. It's not finished yet, though. I am a Linux user \nand the BBS part of FS-3 works like a charm thanks to the PacSat Ground \nsoftware of Chris G0KLA.\n\nThanks for the reply and 73 de Hans\nBX2ABT\n", "attachments": [] }