Cobra Antenna Project by W4ZJOH--160 Meter and up Restricted. Post #1410.
Cobra Antenna Project by W4JOH--160 Meter and up Restricted (http://www.hamuniverse.com/cobraantenna.html). Author: Raymond A. Cook (W4OJH)--revised by N4UJW. Accessed on 22 February 2018, 0147 UTC, Post #1410. Please enter the title URL into your browser search box to read the full article. Comment: Here's a HF antenna that you don't see very often. The Cobra Antenna, which can be used on Amateur Radio bands from 160 meters through 10 meters, first appeared in the June 1997 edition of "73 Magazine Amateur Radio Today." In that article, Raymond A Cook (W4OJH) described a type of folded dipole made from standard insulated wire (about 14 gauge) and fed with 450 ohm ladder line into an antenna "tuner." The antenna's name is an apparent reference to the antenna's "S-Shaped" configuration of its multi-band elements. The antenna works on its primary and harmonic operating frequencies as a standard ladder line fed dipole. N4UJ...