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GET /hyperkitty/api/list/[email protected]/email/STI5S2ZUJ62ICZF4OIZEODAUOHQDCXWK/
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/STI5S2ZUJ62ICZF4OIZEODAUOHQDCXWK/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "C4E0E574C85C4035A487814E46EE5244@MikeClone", "message_id_hash": "STI5S2ZUJ62ICZF4OIZEODAUOHQDCXWK", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/STI5S2ZUJ62ICZF4OIZEODAUOHQDCXWK/", "sender": { "address": "mryan301 (a) comcast.net", "mailman_id": "bd66675a3fd2449d9a39d8aa56f5d5af", "emails": "https://mailman.amsat.org/hyperkitty/api/sender/bd66675a3fd2449d9a39d8aa56f5d5af/emails/" }, "sender_name": "Mike Ryan", "subject": "[amsat-bb] Re: Quadrifilar Helix antenna question", "date": "2012-01-23T22:15:26Z", "parent": null, "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "QFH are a bear to build, especially on 70 cm unless you’re very , very skilled. I tried 3 times and failed 3 times. Finally gave up and went with a standard turnstyle. Still critical tolerances but much easier to make and works lower on the horizon than the QFH. QHtenna used to sell turnstiles (reviewed in QST) but I think they are out of business now. You might also want to consider a moxon. Cebik wrote a nice article on making a moxon based turnstile. I built one for 70 cm using PVC and like the QFH and eggbeater (with reflector) , it works best on higher passes. \n\nIf you run out of patience, you might consider the Antennas.us QFH. It was also reviewed positively in QST but I don’t own one.\n\nAnd lastly, omnis are small and simple, but you really need a preamp to avoid a terminal case of frustration. I use the ones from ARR with good results.\n\n\nMike\n", "attachments": [] }