30 January 2023 – more NVIS updates
30 January 2023. I added some tables of expected vertical radiation angles to the NVIS page, as well as a plot of the relative signal strength pattern of a dipole overlaid on a map.
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30 January 2023. I added some tables of expected vertical radiation angles to the NVIS page, as well as a plot of the relative signal strength pattern of a dipole overlaid on a map.
Now that we are recovering from an episode of “Real Life”, I’ve updated the main NVIS article with a discussion on effective ionosphere height, and the impact on vertical angle vs. distance. This supports some other work that is ongoing…
Added 4 videos to my “videos” page, and to the “dipole designs” index page. These videos show my typical methods of setting up portable dipoles.
On Saturday 13 August 2022, I am presenting a Field Antenna Workshop in Hillsboro, Oregon, for the Washington County Amateur Radio Emergency Service (ARES®). Hillsboro is a western suburb of Portland, Oregon (airport code PDX). This workshop is open to others who are interested, although there may be some space limitations. If you are interested […]
Added a Field Day Checklist to the Field Day Antennas page. Added an improved method of using a traditional rope tensioner in the Alternatives to Knots page.
Added a table of wire lengths for some common antennas to the Field Day page.
Added double loops and bisquare to the Loop Antenna Designs and Field Day Antenna Selection page, and the Johnson Matchbox to the Feeding the Antenna section.
Along with the Field Day Antenna Selection Guide, there are new articles on multiband dipoles, wire yagis, wire quads, and wideband fan dipoles. And watch for more Field Day related articles to come soon!
9 January 2022 – expanded articles on NVIS and Alternatives to Knots