{"id":1966,"date":"2023-05-09T06:47:55","date_gmt":"2023-05-09T01:17:55","guid":{"rendered":"https:\/\/johnsonfrancis.org\/techworld\/?p=1966"},"modified":"2024-06-24T16:55:45","modified_gmt":"2024-06-24T11:25:45","slug":"what-is-a-cobweb-antenna","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/techworld\/what-is-a-cobweb-antenna\/","title":{"rendered":"What is a Cobweb Antenna?"},"content":{"rendered":"

Cobweb Antenna is a small, light weight, multiband antenna, typically covering five ham radio bands from 14 MHz to 28 MHz. Cobweb antenna requires only one support and gives performance like a full size dipole on the five bands 20, 17, 15, 12 and 10m. Moreover, it can be fed by a single 50 Ohms coaxial cable. It has a horizontally polarized radiation pattern. There are five folded dipoles which are fed by a common balun. As it is an omnidirectional antenna, an antenna rotator is not needed. Size of 5 band version will be only 2.8 x 2.8 m, which makes it quite popular. Seven band version including 40m and 6m are also there.<\/p>\n

\"What<\/p>\n

Cobweb antenna gives a reasonable performance at even 10 feet height, though 20 feet height is desirable. Another advantage mentioned is that as it has the appearance of a washing line, acceptance by the ham’s family is good! As the dipoles get folded into square shape, impedance is around 12.5 Ohms and needs a 1:4 current balun in the terminal box. When a current balun is used, no additional choking on the coax<\/a> is needed.<\/p>\n","protected":false},"excerpt":{"rendered":"

Cobweb Antenna is a small, light weight, multiband antenna, typically covering five ham radio bands from 14 MHz to 28 MHz. Cobweb antenna requires only one support and gives performance like a full size dipole on the five bands 20, 17, 15, 12 and 10m. Moreover, it can be fed by a single 50 Ohms […]<\/p>\n","protected":false},"author":1,"featured_media":1978,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-1966","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-amateur-radio-ham-radio"],"yoast_head":"\nWhat is a Cobweb Antenna? - Johnson's Techworld<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/techworld\/what-is-a-cobweb-antenna\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is a Cobweb Antenna? - Johnson's Techworld\" \/>\n<meta property=\"og:description\" content=\"Cobweb Antenna is a small, light weight, multiband antenna, typically covering five ham radio bands from 14 MHz to 28 MHz. 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