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GET /hyperkitty/api/list/[email protected]/email/QJOKQRDYV3J2K3SRHENR6573XJQ6XTAB/
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/QJOKQRDYV3J2K3SRHENR6573XJQ6XTAB/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "CABGf72om=4dfXr-kRVnb3-NiZwZW=m=gya0HXcdJMT=u45UwHQ@mail.gmail.com", "message_id_hash": "QJOKQRDYV3J2K3SRHENR6573XJQ6XTAB", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/K2P67KJGASNSUHSZ4GUK2POL73ELQBR7/", "sender": { "address": "tosca005 (a) umn.edu", "mailman_id": null, "emails": null }, "sender_name": "tosca005 University of Minnesota", "subject": "Re: [amsat-bb] Antenea Masts", "date": "2018-08-03T19:31:25Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/K2P67KJGASNSUHSZ4GUK2POL73ELQBR7/", "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Max-Gain Systems has a number of extensible/collapsable fiberglass masts,\nsome of which might meet your needs, although MGS does not actually\nrecommend mounting a rotatable antenna on one of their push-up systems.\n\nhttps://mgs4u.com/product/mk-4-series-25ft-masts/ can extend up to 25\nfeet, but the top section is only one inch in diameter, so it might not\nsupport a 6M5X yagi.\n\nhttps://mgs4u.com/product/mk-8/ can extend up to 50 feet when guyed and\nattached to a strong base, but to get up to 20 feet you only need to use 2\nor 3 of the biggest nested sections so it might be more suitable for\nholding the 6M5X at 20 feet up.\n\nMGS also sells fiberglass tubing and rods, so you could put a solid rod\ninside the third section to strengthen it. You could also \"double up\"\nsections, i.e. glue a 2.25\"OD tube inside of a 2.50\"OD tube to make the\nlowest section at double the wall strength, then a 1.75\"OD tube inside of a\n2.00\"OD tube as the second section that would slide into the first section,\nand then get a 1.50\"OD solid rod as the third section. In fact, instead of\ngluing together a 1.75\"ID and a 2.00\"ID tube, you could just buy a 2.00\"OD\ntube in 1/4\" wall thickness. (Most of their fiberglass tubes only come in\n1/8\" wall thickness.) Since they sell the tubes and rods in 4 foot and 8\nfoot lengths, a 3-section mast extended to 20 feet would allow for 2 feet\nof overlap per section which would be plenty.\n\nFor more details on their fiberglass offerings, go to\nhttps://mgs4u.com/telescoping-fiberglass-tube-and-rod-price-list-2/\n\nGood luck.\nJohn, W0JT/5, EL09vu20\n\nOn Thu, Jul 26, 2018 at 7:24 AM, Paul Overn via AMSAT-BB <[email protected]\n> wrote:\n\n> I know this isn't exactly satellite related, but I've asked for help in\n> other places, and the feedback has been sparse. You guys have always been\n> very helpful.\n> I'm looking for a portable antenna mast that I can use between passes\n> while satellite roving. I would like it to be able to go to at least 20',\n> hold a 5 element M2 6 Meter yagi, be able to fit in a small truck and be\n> portable.\n> I have looked at numerous military surplus masts, like at Go-vertical-usa,\n> but they will not return any of my correspondence. I have looked into many\n> \"home brew\" solutions, but I'm just not that handy.\n>\n> Anyone have any good sites I can go to for something that fits my needs?\n> Thanks in advance for your help!\n>\n>\n> Paul Overn\n> KE0PBR\n> Twitter: @KE0PBR\n> `·.¸¸.·´¯`·.. ><((((º>`·.¸¸.·´¯`·.¸><((((º>`·.¸¸.·´¯`·.. ><((((º>\n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available\n> to all interested persons worldwide without requiring membership. Opinions\n> 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", "attachments": [] }