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{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/J4MQZVCJOGT647TJXMPZUMLXOWAWYBYS/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "[email protected]", "message_id_hash": "J4MQZVCJOGT647TJXMPZUMLXOWAWYBYS", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/J4MQZVCJOGT647TJXMPZUMLXOWAWYBYS/", "sender": { "address": "rcaron (a) gmail.com", "mailman_id": null, "emails": null }, "sender_name": "Ryan Caron", "subject": "[amsat-bb] Re: AlfaSpid RAS & Predict", "date": "2010-02-06T21:59:07Z", "parent": null, "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Despite EasyComm 2's similarities to GS-232, modifications to Predict's \nsource code haven't been successful in controlling the RAS rotator; are \nall the AlfaSpid users here on Nova / SatPC32 / Orbitron?\n\nI gave Alfa Radio a call yesterday and they said that the controller \nappears to flicker when viewed under florescent lighting, so once I \ncheck that under a good old incandescent it should be fine.\n\nI also picked up one of MFJ's variable voltage supplies, so it is a \nsimple matter to observe how the controller does not enjoy lower \nvoltages. The flicking I'm talking about is much faster and subtle; the \nmultiplexing theory from earlier is a good one.\n\nUltimately I will run off of a stepped-down AC, probably with a variac \nthrown in. I've always wanted the ability to throttle rotations; the \nstart-stop motion has always irked me. Makes the long yagis shake.\n\nI'm looking forward to putting a small (~6ft) dish on this thing, but \nright now the focus is a yagi array (4x 440CP42UG, 2x 2MCP22). I don't \nhave the heavy-duty version. Picked it up from Hy-Gain since the \nexchange rate to Canada is not, shall we say, favorable right now.\n\n73,\nRyan KB1LKI\n\nOn 2/6/10 12:00 PM, [email protected] wrote:\n> Message: 7\n> Date: Sat, 6 Feb 2010 14:15:32 -0500 (EST)\n> From: [email protected]\n> Subject: [amsat-bb] Re: AlfaSpid RAS& Predict\n> To: John Heath<[email protected]>\n> Cc: Amsat<[email protected]>\n> Message-ID:\n> \t<15590894.1265483732218.JavaMail.root@elwamui-rubis.atl.sa.earthlink.net>\n> \t\n> Content-Type: text/plain; charset=UTF-8\n>\n> Hi John,\n> Are you using this rotor system for an array of antennas\n> or a big dish? If a dish, how large? I noticed their rotors at\n> Visalia last year. But didn't ask the reps their thoughts\n> about turning a 12 to 16 foot dish. I know there are two\n> versions, I think one is heavy duty. Not sure which one\n> you are using. Thank You for any additional info.\n> 73,\n>\n> de KB8VAO, Steve\n", "attachments": [] }