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Antennas : 160M

• The Cobra Antenna - A folded wire antenna for 160 meters as appeared on 73 amateur radio magazine june 1997
  [ Hits: 2138 | Votes: 4 | Rating: 5.75 ]

• 20 meter homebrew MOXON - 9Y4DD's Dave 14 MHz home-brew MOXON antenna project
  [ Hits: 10619 | Votes: 13 | Rating: 6.53 ]

• 144 MHz 5/8 whip antenna - Making your own 2 metre (146 MHz) 5/8th wave whip antenna
  [ Hits: 7241 | Votes: 29 | Rating: 6.65 ]
• 2 Meter Whip Antenna - Making your own 2 metre (146 MHz) 5/8th wave whip antenna
  [ Hits: 1711 | Votes: 3 | Rating: 5.67 ]
• Make your own 2 metre 5/8 whip antenna - This article is about a home made project of a whip antenna for 2 meters band. Includes lenght of whip for all frequencies from 140 MHz to 151 MHz both in mm and inches
  [ Hits: 386 | Votes: 1 | Rating: 5 ]

• Modeling the W6NL 40m Moxon - This note looks at the antenna and antenna model for the 40 meter Moxon Yagi designed by Dave Leeson, W6NL. The performance of the antenna, through the model, will be explored in several typical settings.
  [ Hits: 2259 | Votes: 7 | Rating: 8.14 ]

• Chokes and Isolation Transformers for Receiving Antennas - Chokes and isolation transformers are essential for receiving antennas to mitigate common mode current, which induces noise and interferes with signal quality. Common mode chokes, formed by winding feedline through ferrite cores, block unwanted current effectively. Proper selection of core material and winding turns ensures resonance near the operating frequency, reducing interference. Isolation transformers further minimize interference, crucial for multi-transmitter stations.
  [ Hits: 59 | Votes: 1 | Rating: 9 ]

• W3EDP Multi-band Antenna - An Unorthodox Antenna, originally by W3AWH is considered a multi-band antenna suitable for fixed location use and as an easily deployable portable antenna for events such as Field Days.
  [ Hits: 1105 | Votes: 4 | Rating: 6 ]

• How to stack dissimilar yagi antennas - In this article the author provides some guidelines on how to solve a common problem when stacking different types of yagi antennas on the same mast, limiting the effects on gain and radiation pattern of both antennas
  [ Hits: 726 | Votes: 2 | Rating: 5.5 ]

• Some Useful ZS6BKW Modifications - The ZS6BKW antenna evolved from an optimization of the G5RV antenna. The SWR on 80m is too high and the 40 ft ladder line matching section is a little too long on 17m and a little too short on 10m
  [ Hits: 1025 | Votes: 3 | Rating: 4 ]

• EME user guide by IK1UWL - A complete guide to start operating EME. In this document, that is the result of several years of experimenting, the author summarize the steps to begin on Earth-Moon-Earth communications
  [ Hits: 339 | Votes: 1 | Rating: 7 ]

• Google Earth 4-D Inonosphere - Free real-time Earth Space 4-D global 4-D ionosphere using Google Earth, by CAPS/ES4D Gateway
  [ Hits: 811 | Votes: 5 | Rating: 7.4 ]

• IC-703 Manual - Icom IC-703 HF + 50 MHz english instruction manual
  [ Hits: 364 | Votes: 0 | Rating: 0 ]

• 20m 30m 40m Bandpass Filters - Homemade LC Bandpass Filters for 20M, 30M, 40M In multi-station environments like special events, field day, portable operating, is very important to protect receivers from excessively strong signals. Bandpass filters help to protect your transceivers.
  [ Hits: 382 | Votes: 1 | Rating: 10 ]

• Alinco DJ-191 Quick Reference - CERT Communications Team Procedures Alinco DJ-191 quick reference in a four pages PDF file
  [ Hits: 238 | Votes: 0 | Rating: 0 ]